U.S. patent application number 16/426453 was filed with the patent office on 2019-09-26 for pyruvate dehydrogenase variants, a microorganism comprising the same and a method for producing l-amino acid using the same.
The applicant listed for this patent is CJ CHEILJEDANG CORPORATION. Invention is credited to Hyun Won Bae, Lan Huh, Hyung Joon Kim, Jun Ok Moon, Sung Ki Song.
Application Number | 20190292526 16/426453 |
Document ID | / |
Family ID | 56919058 |
Filed Date | 2019-09-26 |
United States Patent
Application |
20190292526 |
Kind Code |
A1 |
Huh; Lan ; et al. |
September 26, 2019 |
PYRUVATE DEHYDROGENASE VARIANTS, A MICROORGANISM COMPRISING THE
SAME AND A METHOD FOR PRODUCING L-AMINO ACID USING THE SAME
Abstract
The present disclosure relates to a novel pyruvate dehydrogenase
variant, a polynucleotide encoding the pyruvate dehydrogenase
variant, a microorganism of the genus Corynebacterium producing
L-amino acid, which includes the pyruvate dehydrogenase variant,
and a method for producing an L-amino acid using the
microorganism.
Inventors: |
Huh; Lan; (Anyang-si,
KR) ; Moon; Jun Ok; (Yongin-Si, KR) ; Bae;
Hyun Won; (Yongin-si, KR) ; Kim; Hyung Joon;
(Seoul, KR) ; Song; Sung Ki; (Bucheon-si,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CJ CHEILJEDANG CORPORATION |
Seoul |
|
KR |
|
|
Family ID: |
56919058 |
Appl. No.: |
16/426453 |
Filed: |
May 30, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15557013 |
Sep 8, 2017 |
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PCT/KR2016/002594 |
Mar 15, 2016 |
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16426453 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C12P 13/04 20130101;
C12Y 102/04001 20130101; C12P 13/08 20130101; C12N 9/0008 20130101;
C12N 15/77 20130101 |
International
Class: |
C12N 9/02 20060101
C12N009/02; C12N 15/77 20060101 C12N015/77; C12P 13/04 20060101
C12P013/04; C12P 13/08 20060101 C12P013/08 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 18, 2015 |
KR |
10-2015-0037654 |
Claims
1-14. (canceled)
15. A polypeptide having pyruvate dehydrogenase activity, wherein
the polypeptide comprises an amino acid sequence having at least a
95% sequence identity to the SEQ ID NO: 1 and comprising at least
one amino acid substitutions in a region of amino acids at
positions from 190 to 205 of SEQ ID NO:1.
16. The polypeptide of claim 15, wherein the at least one amino
acid substitution in the region of amino acids at positions from
190 to 205 of SEQ ID NO: 1 is selected from the group consisting of
amino acids at positions 190, 195, 199, and 201
17. The polypeptide of claim 15, wherein the at least one amino
acid substitution in the region of amino acids at positions from
190 to 205 of SEQ ID NO: 1 is selected from the group consisting of
a substitution at position 190 from glutamic acid to valine
(E190V), a substitution at position 195 from glutamine to histidine
(Q195H), a substitution at position 199 from proline to serine
(P199S), and a substitution at position 201 from tyrosine to
alanine (Y201A).
18. The polypeptide of claim 15, wherein the amino acid sequence is
selected from the group consisting of SEQ ID NOS: 15, 17, 18, 22,
and 24 to 29.
19. A polynucleotide encoding the pyruvate dehydrogenase variant of
claim 15.
20. A vector comprising the polynucleotide of claim 19.
21. A microorganism of the genus Corynebacterium producing L-amino
acid, wherein the microorganism comprises the pyruvate
dehydrogenase variant of claim 15.
22. The microorganism of claim 21, wherein the microorganism is
Corynebacterium glutamicum.
23. A method for producing L-amino acid, comprising: (a) culturing
the microorganism of the genus Corynebacterium of claim 21 in a
medium to produce an L-amino acid; and (b) recovering the L-amino
acid from the cultured microorganism or the medium.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation application of
U.S. application Ser. No. 15/557,013 filed Sep. 8, 2017, now
pending, which is a U.S. national phase application of
PCT/KR2016/002594, filed Mar. 15, 2016, which claims priority to KR
Application No. 10-2015-0037654, filed Mar. 18, 2015. U.S.
application Ser. No. 15/557,013 is herein incorporated by reference
in its entity.
STATEMENT REGARDING SEQUENCE LISTING
[0002] The Sequence Listing associated with this application is
provided in text format in lieu of a paper copy, and is hereby
incorporated by reference into the specification. The name of the
text file containing the Sequence Listing is
200187_431C1_SEQUENCE_LISTING.txt. The text file is 155 KB, was
created on May 29, 2019, and is being submitted electronically via
EFS-Web.
TECHNICAL FIELD
[0003] The present disclosure relates to a novel pyruvate
dehydrogenase variant, a polynucleotide encoding the pyruvate
dehydrogenase variant, a microorganism of the genus
Corynebacterium, having an ability to produce L-amino acid which
comprises the variant, and a method for producing an L-amino acid
using the microorganism.
BACKGROUND ART
[0004] Pyruvate dehydrogenase multienzyme complex (PDHC) is an
enzyme converting pyruvate generated during glycolysis into
acetyl-CoA and is an important enzyme for determining carbon
introduction to TCA cycle. PDHC consists of pyruvate dehydrogenase
(E1p), dihydrolipoamide acetyltransferase (E2p), and
dihydrolipoamide dehydrogenase (E3p). Among them, E1p enzyme is
encoded by aceE gene. Although the changes in L-lysine production
in strain producing L-lysine due to deleting and weakening of aceE
gene (Blombach et al., Appl. Microbiol. Biotechnol., 76: 615, 2007;
Buchholz J et al., Appl Environ Microbiol., 79 (18): 5566-75, 2013)
have been known, there has been no report regarding the E1p
variant, which can improve abilities to produce L-amino acid.
DISCLOSURE
Technical Problem
[0005] The present inventors have made extensive efforts to develop
a E1p variant that can be used in the production of an L-amino acid
at high concentration and a microorganism using the same, and as a
result, have developed the E1p variant and discovered that the
L-amino acid can be produced in high yield from the microorganism
containing the E1p variant, thereby completing the present
disclosure.
Technical Solution
[0006] An object of the present disclosure is to provide a novel
pyruvate dehydrogenase variant.
[0007] Another object of the present disclosure is to provide a
polynucleotide encoding the pyruvate dehydrogenase variant.
[0008] A further object of the present disclosure is to provide a
microorganism of the genus Corynebacterium producing L-amino acid,
which includes the pyruvate dehydrogenase variant.
[0009] A still further object of the present disclosure is to
provide a method for producing an L-amino acid, including: (a)
culturing the microorganism of the genus Corynebacterium producing
L-amino acid, which includes the pyruvate dehydrogenase variant, in
a medium to produce an L-amino acid; and (b) recovering the L-amino
acid from the cultured microorganism or the medium.
Advantageous Effects of the Present Invention
[0010] An enzyme with a weakened activity can be obtained using the
pyruvate dehydrogenase variant of the present disclosure. As such,
an L-amino acid can be produced with high efficiency using the
microorganism, which includes the pyruvate dehydrogenase variant
with weakened activity, compared to an L-amino acid-producing
microorganism, which includes the wild type pyruvate dehydrogenase
protein. Additionally, the microorganism of the present disclosure
enables an effective production of an L-amino acid while rarely
inhibiting the growth of the microorganism, unlike a pyruvate
dehydrogenase-deleted microorganism. For example, lysine, as an
essential amino acid for animal feed, is required to be produced in
a large-scale from the industrial aspect. Therefore, the production
of L-lysine with high efficiency as in the present disclosure can
reduce the cost for manufacturing animal feed.
BEST MODE
[0011] An aspect of the present disclosure provides a pyruvate
dehydrogenase variant which includes at least one amino acid
substitutions in a region of amino acids at positions from 190 to
205 or in a region of amino acids at positions from 415 to 440 of
SEQ ID NO: 1.
[0012] As used herein, the term "pyruvate dehydrogenase" refers to
one of the enzymes constituting a pyruvate dehydrogenase
multienzyme complex (PDHC), which is involved in the conversion of
pyruvate into acetyl-CoA. As used herein, pyruvate dehydrogenase is
not particularly limited as long as it has the corresponding
activity, and it may be a pyruvate dehydrogenase derived from a
microorganism of the genus Corynebacterium, specifically,
Corynebacterium glutamicum, but is not limited thereto. For
example, the pyruvate dehydrogenase may be an amino acid sequence
of SEQ ID NO: 1 or an amino acid sequence having a homology of at
least 75%, specifically at least 80%, more specifically 85%, and
even more specifically 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%,
or 99% or higher to the amino acid sequence of SEQ ID NO: 1. The
E1p protein having the amino acid sequence of SEQ ID NO: 1 may be
encoded by aceE gene having the polynucleotide sequence of SEQ ID
NO: 2, but is not limited thereto. Additionally, if an amino acid
sequence has a homology to the above sequence and has substantially
the same or corresponding biological activity to the protein of SEQ
ID NO: 1, it is obvious that the amino acid sequence with a
deletion, a modification, a substitution, or an addition should
also belong to the scope of the present disclosure. In the present
disclosure, any polynucleotide sequence encoding pyruvate
dehydrogenase may belong to the scope of the present disclosure.
For example, the polynucleotide sequence may be a polynucleotide
sequence which has a homology of at least 75%, specifically at
least 80%, more specifically 85%, and even more specifically 90%,
91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99% or higher, to the
amino acid sequence of SEQ ID NO: 2. Additionally, based on the
codon degeneracy or considering the codons preferred by organisms
to express the protein, the polynucleotide sequence encoding the
protein may have various variants on the coding region within the
scope not changing the amino acid sequence of the protein being
expressed from the coding region.
[0013] The pyruvate dehydrogenase variant according to the present
disclosure may include at least one, at least two, at least three,
at least four, at least five, at least six, at least seven, at
least eight, at least nine, or at least 10 amino acid substitutions
in the region of amino acids at positions from 190 to 205 or from
415 to 440 of SEQ ID NO: 1.
[0014] In particular, the pyruvate dehydrogenase variant according
to the present disclosure may include at least one, at least two,
at least three, or at least four amino acid substitutions in the
region of amino acids at positions from 190 to 205 of SEQ ID NO: 1.
Specifically, the amino acid substitution in the region of amino
acids at positions from 190 to 205 of SEQ ID NO: 1 may be selected
from the group of amino acids at positions 190, 195, 199, and 201,
but is not limited thereto.
[0015] The substitution in the region of amino acids at positions
from 190 to 205 of SEQ ID NO: 1 may be a substitution of at least
one amino acid in the region of amino acids at positions from 190
to 205 with a different kind of an amino acid, more specifically, a
substitution of at least one amino acid at positions 190, 195, 199,
and 201 with a different kind of an amino acid, and even more
specifically, at least one selected from the group consisting of a
substitution of glutamic acid at position 190 with valine (E190V),
a substitution of glutamine at position 195 with histidine (Q195H),
a substitution of proline at position 199 with serine (P199S), and
a substitution of tyrosine at position 201 with alanine (Y201A),
but is not particularly limited thereto.
[0016] Additionally, the pyruvate dehydrogenase variant according
to the present disclosure may include at least one, at least two,
at least three, at least four, at least five, or at least six amino
acid substitutions in the region of amino acids at positions from
415 to 440 of SEQ ID NO: 1. Specifically, the amino acid
substitution in the region of amino acids at positions from 415 to
440 of SEQ ID NO: 1 may be selected from the group consisting of
amino acids at positions 418, 428, 432, 435, and 438.
[0017] The substitution in the region of amino acids at positions
from 415 to 440 of SEQ ID NO: 1 may be a substitution of at least
one amino acid in the region of amino acids at positions from 415
to 440 with a different kind of an amino acid, specifically, a
substitution of at least one amino acid at positions 418, 428, 432,
435, and 438 with a different kind of an amino acid, and even more
specifically, at least one selected from the group consisting of a
substitution of tyrosine at position 418 with histidine (Y418H), a
substitution of asparagine at position 428 with alanine (N428A), a
substitution of glutamine at position 432 with glutamic acid
(Q432E), a substitution of glutamine at position 432 with alanine
(Q432A), a substitution of lysine at position 435 with alanine
(K435A), and a substitution of leucine with proline (L438P), but is
not particularly limited thereto.
[0018] More specifically, the pyruvate dehydrogenase variant may
include an amino acid sequence selected from the group consisting
of SEQ ID NOS: 14 to 33.
[0019] The pyruvate dehydrogenase variant may include not only the
proteins having the amino acid sequences of SEQ ID NOS: 14 to 33
but also the pyruvate dehydrogenase variant having a homology of
75% or higher, specifically 80% or higher, more specifically 85% or
higher, and even more specifically 90%, 91%, 92%, 93%, 94%, 95%,
96%, 97%, 98%, and 99% or higher, to the amino acid sequences of
SEQ ID NOS: 14 to 33, without limitation, as long as their pyruvate
dehydrogenase activity is substantially weakened compared to that
of the wild type. It is obvious that the amino acid sequences
having substantially the same or corresponding biological activity
with the proteins having the amino acid sequences of SEQ ID NOS: 14
to 33 should also belong to the scope of the present disclosure,
although the amino acid sequences may have a deletion, a
modification, a substitution, or an addition, in part of the
sequences.
[0020] As used herein, the term "homology" refers to a percentage
of identity between two polynucleotide or polypeptide moieties. The
homology between sequences from a moiety to another moiety may be
determined by the technology known in the art. For example, the
homology may be determined by directly arranging the sequence
information of two polynucleotide molecules or two polypeptide
molecules using an easily accessible computer program. Examples of
the computer program may include BLAST (NCBI), CLC Main Workbench
(CLC bio), MegAlign.TM. (DNASTAR Inc.), etc. Additionally, the
homology between polynucleotides may be determined by hybridizing
polynucleotides under the condition of forming a stable
double-strand between the homologous regions, disassembling with a
single strand-specific nuclease, followed by size determination of
the disassembled fragments.
[0021] An aspect of the present disclosure provides a
polynucleotide encoding the pyruvate dehydrogenase variant.
[0022] The pyruvate dehydrogenase variant is the same as explained
above. Specifically, the polynucleotide encoding the pyruvate
dehydrogenase variant may belong to the scope of the present
disclosure as long as the polynucleotide encodes proteins having
the amino acid sequences of SEQ ID NOS: 14 to 33. Furthermore, the
polynucleotide may be any polynucleotide having a homology of 75%
or higher, specifically 80% or higher, more specifically 85% or
higher, and even more specifically 90%, 91%, 92%, 93%, 94%, 95%,
96%, 97%, 98%, and 99% or higher, to the above polynucleotide
sequence.
[0023] As used herein, the term "polynucleotide" refers to a
polymer of nucleotides lengthwise chain-extended by a covalent bond
of nucleotide units, in general DNA or RNA strand with a certain
length, and in the present disclosure, it refers to a
polynucleotide encoding the pyruvate dehydrogenase variant. The
polynucleotide may have various nucleotide sequences encoding the
same amino acid based on codon degeneracy. Additionally, for the
optimization of the expression according to the type of host cells,
the polynucleotide may have a codon-optimized sequence.
[0024] Still another aspect of the present disclosure provides a
microorganism of the genus Corynebacterium producing L-amino acid,
which includes the pyruvate dehydrogenase variant.
[0025] Specifically, the microorganism may include the pyruvate
dehydrogenase variant by a mutation, or may be one transformed by a
vector including a polynucleotide, which encodes the pyruvate
dehydrogenase variant.
[0026] As used herein, the term "vector" refers to any carrier for
cloning and/or transferring bases to a host cell. A vector may be a
replicon to allow for the replication of other DNA fragment(s)
which combined with the vector. "Replicon" refers to any genetic
unit acting as the unit of DNA replication in vivo, that is,
genetic units (e.g., plasmids, phages, cosmids, chromosomes, and
viruses) replicable by self-regulation. As used herein, the term
"vector" is not particularly limited as long as it can replicate in
a host, and any vector known in the art may be used. The vector
used in the construction of the recombinant vector may be in a
natural state or plasmids, cosmids, viruses, and bacteriophages in
a recombinant state. For example, as a phage vector or cosmid
vector, pWE15, M13, .lamda.EMBL3, .lamda.EMBL4, .lamda.FIXII,
.lamda.DASHII, .lamda.ZAPII, .lamda.gt10, .lamda.gt11, Charon4A,
Charon21A, etc., may be used, and as a plasmid vector, those based
on pDZ vector, pBR, pUC, pBluescriptII, pGEM, pTZ, pCL, pET, etc.,
may be used. The vectors that can be used in the present disclosure
are not particularly limited but any known expression vector may be
used. Specifically, pDZ (Korean Patent No. 10-0924065 is
incorporated in its entirety as a reference in the present
disclosure) may be used, but is not limited thereto.
[0027] As used herein, the term "transformation" refers to a
process of introducing a gene into a host cell, thereby enabling
the expression of the gene in the host cell. The transformed gene
may include, without limitation, any gene whether it is inserted
into the chromosome of a host cell and located therein or located
outside the chromosome, as long as it can be expressed in the host
cell. The polynucleotide may be introduced into a host cell in the
form of an expression cassette, which is a polynucleotide construct
including all essential elements required for self-expression. The
expression cassette may conventionally include a promoter operably
connected to the gene, a transcription termination signal, a
ribosome-binding domain, and a translation termination signal. The
expression cassette may be in the form of an expression vector
capable of self-replication. Additionally, the polynucleotide may
be introduced into a host cell as it is or in the form of
polynucleotide construct and operably connected to a sequence
necessary for its expression in the host cell, but is not limited
thereto.
[0028] The microorganism may be any prokaryotic or eukaryotic
microorganism as long as the microorganism includes the activity of
the corresponding pyruvate dehydrogenase variant or the
microorganism is transformed to express the corresponding protein.
Examples of the microorganism may include microbial strains of the
genus Escherichia, the genus Erwinia, the genus Serratia, the genus
Providencia, the genus Enterobacteria, the genus Salmonella, the
genus Streptomyces, the genus Pseudomonas, the genus
Brevibacterium, the genus Corynebacterium, etc., specifically, a
microorganism of the genus Corynebacterium, and more specifically,
Corynebacterium glutamicum, but is not limited thereto.
[0029] Additionally, when the pyruvate dehydrogenase variant of the
present disclosure is included in the microorganism having an
ability to produce L-amino acid, the ability to produce L-amino
acid can be significantly improved without considerably inhibiting
the growth of cells, compared to the microorganism including the
wild-type pyruvate dehydrogenase.
[0030] As used herein, the term "L-amino acid" refers to all
L-amino acids that can be produced from various carbon sources
through pyruvate, and specifically, may refer to an L-amino acid
which does not go through with a process of converting pyruvate
into acetyl CoA in a biosynthetic pathway. More specifically, the
L-amino acid may include L-lysine, L-threonine, L-methionine,
L-isoleucine, L-valine, L-leucine, or L-alanine, and even more
specifically, L-lysine or L-valine.
[0031] The microorganism producing L-amino acid may include both
eukaryotic and prokaryotic microorganisms that can produce L-amino
acid in vivo, and examples of the microorganisms are the same as
described above. The microorganism producing L-amino acid may be
any microorganism without limitation as long as the microorganism
has the ability to produce L-amino acid, including both wild-type
strains and recombinant strains.
[0032] For example, a microorganism of the genus Corynebacterium
producing L-lysine may be modified to be resistant to an L-lysine
analog or have enhanced activity of the L-lysine
biosynthesis-related protein compared to that of unmodified
microorganism. Specifically, expression of at least one kind of
gene related to L-lysine biosynthesis is improved by gene
amplification; substitution or modification of sequences such as a
promoter or a start codon; introduction of a modification for the
improvement of expression, etc., but is not limited thereto.
[0033] Additionally, examples of the L-lysine biosynthesis-related
gene may include the genes located on the L-lysine biosynthesis
pathway, and specifically, dihydrodipicolinic acid synthasegene
(dapA), asparto kinasegene (lysC), dihydrodipicolinic acid
reductase gene (dapB), diaminopimelic acid decarboxylase gene
(lysA), diaminopimelic acid dehydrogenase gene (ddh),
phosphoenolpyruvate carboxykinase gene (ppc), aspartate
semialdehyde dehydrogenase gene (asd), aspartase gene (aspB), and
pyruvate carboxylase (Pyc), but is not limited thereto.
Additionally, examples of the L-lysine biosynthesis-related gene
may include transketolase (tkt), etc., present on the pentose
phosphate pathway, but is not limited thereto.
[0034] In particular, the microorganism of the genus
Corynebacterium producing L-lysine may exhibit the ability to
produce L-lysine by including the modification, which is related to
L-lysine production, disclosed in the art, but is not limited
thereto.
[0035] The microorganism producing L-threonine may be a
microorganism, which has a methionine requirement, a resistance to
threonine analogs, a resistance to lysine analogs, a resistance to
isoleucine analogs, and/or a resistance to methionine analogs,
although not particularly limited thereto. Methionine analogs may
be at least one compound selected from the group consisting of
D,L-ethionine, norleucine, .alpha.-methylmethionine, and
L-methionine-D,L-sulfoximine; threonine analogs may be at least one
compound selected from the group consisting of
.alpha.-amino-.beta.-hydroxy valeric acid and D,L-threonine
hydroxamate; and lysine analogs may be at least one compound
selected from the group consisting of S-(2-aminoethyl)-L-cysteine
and .delta.-methyl-L-lysine.
[0036] Additionally, the microorganism producing L-threonine may
include a microorganism, in which the activity of PckA involved in
the conversion of oxaloacetate (OAA), which is an intermediate for
L-threonine biosynthesis, into phosphoenolpyruvate (PEP) is
weakened or inactivated; or a microorganism, in which the activity
of TyrR, which inhibits lysC gene involved in the conversion of
oxaloacetate into aspartate is weakened or inactivated; or a
microorganism, in which the activity of GalR, which inhibits the
expression of galP gene involved in the introduction of glucose is
weakened or inactivated, but is not limited thereto.
[0037] The microorganism producing L-isoleucine may be a
microorganism having a resistance to L-isoleucine or derivatives
thereof, or a microorganism which was genetically manipulated to
release the feedback inhibition by L-isoleucine or derivatives
thereof. Examples of the derivatives of L-isoleucine may include
4-thiaisoleucine (thiaile) and isoleucine-hydroxamate (ileHx), but
is not limited thereto.
[0038] The microorganism producing L-valine may be a microorganism
having a resistance to L-valine or derivatives thereof, or a
microorganism in which the enzyme in the biosynthesis pathway of
L-valine was genetically manipulated to release the feedback
inhibition by L-valine or derivatives thereof. Examples of the
microorganism may include a microorganism including an acetohydroxy
acid synthase variant, in which the feedback inhibition to L-valine
is released, but is not limited thereto. Additionally, the
microorganism may be one in which the expression of L-valine operon
was modified to be enhanced, and for example, the microorganism may
be one in which the expression of L-valine operon was enhanced due
to the deletion of a part or entirety of the polynucleotide
sequence encoding the leader peptide within the regulation region
of L-valine operon (Korean Patent Application Publication No.
10-2014-0111421, the entirety of the specification of which may be
incorporated as a reference but is not limited thereto).
[0039] In Still another aspect of the present disclosure provides a
method for producing L-amino acid, including: (a) culturing the
microorganism of the genus Corynebacterium producing L-amino acid,
which includes the pyruvate dehydrogenase variant, in a medium to
produce an L-amino acid; and (b) recovering the L-amino acid from
the cultured microorganism or the medium.
[0040] The microorganism of the genus Corynebacterium producing
L-amino acid, etc., are the same as described above.
[0041] As used herein, the term "culture" refers to growing the
microorganism under appropriately and artificially controlled
environmental conditions. The culture process of the present
disclosure may be executed based on appropriate culture media and
culture conditions known in the art. Specific conditions, such as
culture temperature, culture time, pH value of culture medium,
etc., may be determined by the general knowledge by one of ordinary
skill in the art or the conventional method known in the art, and
appropriately adjusted accordingly. Specifically, these known
culture methods are described in references in details [Chmiel;
Bioprozesstechnik 1. Einfuhrung indie Bioverfahrenstechnik (Gustav
Fischer Verlag, Stuttgart, 1991), and Storhas; Bioreaktoren und
periphere Einrichtungen (Vieweg Verlag, Braunschweig/Wiesbaden,
1994)]. Additionally, the culture methods may include batch
culture, continuous culture, and fed-batch culture, and
specifically, the culture may be performed continuously in a fed
batch or repeated fed batch process, but are not limited thereto.
The medium used in the culture must appropriately satisfy the
requirements for specific strains. Examples of the carbon source to
be used in the medium may include sugars and carbohydrates such as
glucose, sucrose, lactose, fructose, maltose, starch, and
cellulose; oils and fats such as soybean oil, sunflower oil, castor
oil, and coconut oil; fatty acids such as palmitic acid, stearic
acid, and linoleic acid; alcohols such as glycerol and ethanol; and
organic acids such as acetic acid, but are not limited thereto.
These carbon sources may be used alone or in combination but are
not limited thereto. Examples of the nitrogen sources to be used in
the medium may include peptone, yeast extract, meat gravy, malt
extract, corn steep liquor, soybean flour; and urea or inorganic
compounds such as ammonium sulfate, ammonium chloride, ammonium
phosphate, ammonium carbonate, and ammonium nitrate. These nitrogen
sources may also be used alone or in combination, but are not
limited thereto. Examples of the phosphorus sources to be used in
the medium may include dihydrogen phosphate, dipotassium hydrogen
phosphate, corresponding sodium-containing salts, etc., but are not
limited thereto. Additionally, metal salts such as magnesium
sulfate or iron sulfate required for growth may be contained in the
medium. Lastly, essential materials for growth, such as amino acids
and vitamins, may also be contained in addition to the materials
described above. Additionally, precursors suitable for culture
medium may be used. These sources may be added in an appropriate
manner during the culture by a batch culture or a continuous
culture to a culture, but the methods are not limited thereto.
[0042] Additionally, the pH value of a culture may be adjusted
while culturing by adding a compound such as ammonium hydroxide,
potassium hydroxide, ammonia, phosphoric acid, and sulfuric acid to
the culture in an appropriate manner. During the culture period, an
antifoaming agent, such as fatty acid polyglycol ester, may be
added to prevent foam generation. Additionally, oxygen or an
oxygen-containing gas may be injected into the culture in order to
maintain an aerobic state of the culture, or nitrogen, hydrogen, or
carbon dioxide gas may be injected without the injection of a gas
in order to maintain an anaerobic or microaerobic state of the
culture. The culture temperature may generally be in the range from
27.degree. C. to 37.degree. C., and specifically, from 30.degree.
C. to 35.degree. C. The culture may be continued until the desired
amount of useful materials are obtained, and specifically for from
10 hours to 100 hours. L-amino acids may be released into the
culture medium being cultured or may be contained in
microorganisms.
[0043] Additionally, regarding the method of producing an L-amino
acid of the present disclosure, the method of recovering the
L-amino acid from a cultured microorganism or a culture is widely
known in the art. The methods of recovering an L-amino acid may
include filtration, anion exchange chromatography, crystallization,
HPLC, etc., but are not limited thereto.
MODE FOR CARRYING OUT THE INVENTION
[0044] Hereinafter, the present disclosure will be described in
more detail with reference to Examples. However, these Examples are
for illustrative purposes only, and the disclosure is not intended
to be limited by these Examples.
Example 1: Construction of a Library of E1p Variants by Artificial
Mutagenesis
[0045] In this Example, a vector library for the primary cross
insertion within the chromosome was constructed in order to obtain
E1p variants by the method described below. Error-prone PCR was
performed for the Corynebacterium glutamicum ATCC13032-derived aceE
gene (SEQ ID NO: 2), which encodes E1p (SEQ ID NO: 1), and modified
aceE gene (2852 bp) randomly introduced with base substitution were
obtained. Error-prone PCR was performed by the Genemorph II Random
Mutagenesis Kit (Stratagene) using Corynebacterium glutamicum
ATCC13032 genomic DNA as a template along with primer 1 (SEQ ID NO:
3) and primer 2 (SEQ ID NO: 4).
TABLE-US-00001 primer 1 (SEQ ID NO: 3): 5'-TGGGA CCGGG AAACC GGG-3'
primer 2 (SEQ ID NO: 4): 5'-GATTT ATCTG TCCCT TGA-3'
[0046] The amplified gene fragments were introduced with 0 to 3.5
base substitution per 1 kb, and PCR was performed for a total of 30
cycles under the following conditions: 96.degree. C. denaturation
for 30 sec, annealing at 53.degree. C. for 30 sec, and
polymerization at 72.degree. C. for 2 min.
[0047] The amplified fragments were linked to pCR2.1-TOPO vector
(hereinafter, "pCR2.1") using the pCR2.1-TOPO TA cloning kit
(Invitrogen), transformed into E. coli DH5.alpha., and plated on LB
solid medium containing kanamycin (25 mg/L). The 20 different kinds
of transformed colonies were selected and then plasmids were
obtained therefrom. Upon analysis of the polynucleotide sequences
of the plasmids, it was confirmed that modifications were
introduced to mutually different positions with a frequency of 1.4
mutations/kb. About 20,000 transformed E. coli colonies were
collected and their plasmids were extracted and named as
"pCR2.1-aceE (mt)" library.
[0048] Additionally, a plasmid having the wild-type aceE gene to be
used as the control strain was constructed. PCR was performed in
the same manner as described above using the Corynebacterium
glutamicum ATCC13032 genomic DNA as a template along with primer 1
(SEQ ID NO: 3) and primer 2 (SEQ ID NO: 4). For the polymerase,
PfuUltra High-Fidelity DNA polymerase (Stratagene) was used and the
thus-constructed plasmid was named as "pCR2.1-aceE(WT)."
Example 2: Construction of an aceE-Deletion Strain
[0049] An aceE-deletion strain was constructed for the introduction
of the pCR2.1-aceE (mt) library using the KCCM11016P (the above
microorganism was first published as KFCC10881 and re-deposited to
an international depositary authority under the Budapest Treaty and
assigned the Accession No. KCCM11016P; Korean Patent No.
10-0159812) strain as a parent strain.
[0050] For the construction of an aceE-deletion vector, PCR was
performed using the chromosome of the wild-type Corynebacterium
glutamicum ATCC13032 as a template along with primer 3 (SEQ ID NO:
5), primer 4 (SEQ ID NO: 6), primer 5 (SEQ ID NO: 7), and primer 6
(SEQ ID NO: 8).
TABLE-US-00002 primer 3 (SEQ ID NO: 5): 5'-GCAGG TCGAC TCTAG ATGCG
ATTCG CGTCA AACGT G-3' primer 4 (SEQ ID NO: 6): 5'-GTCCC TTGAG
GTGAT GTGAA TCCAT CCACT-3' primer 5 (SEQ ID NO: 7): 5'-AGTGG ATGGA
TTCAC ATCAC CTCAA GGGAC-3' primer 6 (SEQ ID NO: 8): 5'-CCGGG GATCC
TCTAG ACGAA GCGCC GTGAG CAATT C-3'
[0051] PCR was performed under the following conditions:
denaturation at 95.degree. C. for 5 min; 30 cycles of denaturation
at 95.degree. C. for 30 sec, annealing at 55.degree. C. for 30 sec,
and polymerization at 72.degree. C. for 30 sec; and polymerization
at 72.degree. C. for 7 min.
[0052] As a result, SEQ ID NO: 9 (521 bp) and SEQ ID NO: 10 (538
bp), which respectively include the 5'terminus and 3'terminus, were
obtained.
[0053] PCR was performed using the amplified sequences of SEQ ID
NO: 9 and SEQ ID NO: 10 as templates along with primer 3 (SEQ ID
NO: 5) and primer 6 (SEQ ID NO: 8).
[0054] PCR was performed under the following conditions:
denaturation at 95.degree. C. for 5 min; 30 cycles of denaturation
at 95.degree. C. for 30 sec, annealing at 55.degree. C. for 30 sec,
and polymerization at 72.degree. C. for 60 sec; and polymerization
at 72.degree. C. for 7 min.
[0055] As a result, SEQ ID NO: 11 with a size of 1029 bp
(hereinafter, .DELTA.aceE), in which the 5' terminus and 3'
terminus of the aceE gene were connected, was amplified.
[0056] The pDZ vector (Korean Patent No. 10-0924065), which cannot
replicate in Corynebacterium glutamicum, and the .DELTA.aceE
fragment were treated with the restriction enzyme Xba I and ligated
using a DNA ligase, and cloned to obtain a plasmid. The plasmid was
named aspDZ-.DELTA.aceE.
[0057] The pDZ-.DELTA.aceE was transformed into Corynebacterium
glutamicum KCCM11016P, which is a L-lysine producing strain, by
electric pulse (Appl. Microbiol. Biothcenol. (1999) 52: 541-545),
and the transformed strain was obtained from a selective medium
containing kanamycin (25 mg/L). A strain, in which the aceE gene
was inactivated by .DELTA.aceE, the DNA fragment inserted into the
genome via secondary cross-over, was obtained and named as
KCCM11016P.DELTA.aceE.
Example 3: Construction of an E1p Artificial Variant Library and
Screening of Strains with Enhanced Ability to Produce L-Lysine
[0058] The constructed pCR2.1-aceE (mt) library, was transformed
into the KCCM11016P.DELTA.aceE strain as a parent strain by
homologous recombination, plated on a complex plate medium
containing kanamycin (25 mg/L), and about 10,000 colonies were
obtained, and each colony was named as
"KCCM11016P.DELTA.aceE/pCR2.1-aceE(mt)-1" to
"KCCM11016P/pCR2.1-aceE(mt)-10000," respectively.
[0059] Additionally, the thus-constructed pCR2.1-aceE (WT) vector
was transformed into KCCM11016P.DELTA.aceE to obtain a control
strain, and named as "KCCM11016P.DELTA.aceE/pCR2.1-aceE (WT)."
[0060] <Complex Plate Medium (pH 7.0)>
[0061] Glucose 10 g, Peptone 10 g, Beef Extract 5 g, Yeast Extract
5 g, Brain Heart Infusion 18.5 g, NaCl 2.5 g, Urea 2 g, Sorbitiol
91 g, and Agar 20 g (based on 1 L of distilled water)
[0062] The thus-obtained 10,000 colonies were respectively
inoculated into a selective medium (300 .mu.L) and cultured in
96-deep well plates maintained at 32.degree. C. at a rate of 1000
rpm for about 24 hours. The amount of L-lysine production produced
in the culture was analyzed by ninhydrin method (J. Biol. Chem.
1948. 176: 367-388). Upon completion of the culture, 10 .mu.L of
the culture supernatant and 190 .mu.L of ninhydrin reaction
solution were reacted at 65.degree. C. for 30 minutes. The
absorbance at wavelength 570 nm was measured by a spectrophotometer
and was compared to that of the control strain
KCCM11016P.DELTA.aceE/pCR2.1-aceE (WT), and 256 modified strains
showing an absorbance with at least 10% increase were selected.
Other colonies showed similar or reduced absorbance compared to
that of the control strain.
[0063] <Selective Medium (pH 8.0)>
[0064] Glucose 10 g, (NH.sub.4).sub.2SO.sub.4 5.5 g,
MgSO.sub.4.7H.sub.2O 1.2 g, KH.sub.2PO.sub.4 (0.8 g,
K.sub.2HPO.sub.4 16.4 g, Biotin 100 .mu.g, Thiamine HCl 1000 .mu.g,
Calcium-Pantothenic Acid 2000 .mu.g, and Nicotinamide 2000 .mu.g
(based on 1 L of distilled water)
[0065] The selected 256 strains were subjected to the ninhydrin
reaction in the same manner as described above, and the top 53
kinds of strains with improved ability to produce L-lysine compared
to that of KCCM11016P.DELTA.aceE/pCR2.1-aceE(WT) strain were
selected.
Example 4: Confirmation of Abilities to Produce L-Lysine for
Strains Selected from the E1p Artificial Variant Library
[0066] For comparison of the abilities to produce L-lysine for the
53 different strains selected in Example 3, the strains were
cultured by the method described below and the components of the
cultures obtained thereof were analyzed.
[0067] Each of the strains was inoculated into 250 mL corner-baffle
flasks containing 25 mL of a seed culture medium, respectively, and
cultured in a shaking incubator (200 rpm) at 30.degree. C. for 20
hours. Each of the 250 mL corner-baffle flasks containing 24 mL of
an L-lysine producing culture was inoculated with 1 mL of a seed
culture liquid, and cultured in a shaking incubator (200 rpm) at
30.degree. C. for 72 hours. The concentration of L-lysine in each
culture was analyzed via HPLC.
[0068] <Seed Culture Medium (pH 7.0)>
[0069] Glucose (20 g), Peptone (10 g), Yeast Extract (5 g), Urea
(1.5 g), KH.sub.2PO.sub.4 (4 g), K.sub.2HPO.sub.4 (8 g),
MgSO.sub.4.7H.sub.2O (0.5 g), Biotin (100 .mu.g), Thiamine HCl
(1000 .mu.g), Calcium-Pantothenic Acid (2000 .mu.g), Nicotinamide
(2000 .mu.g) (based on 1 L of distilled water)
[0070] <Lysine-Producing Medium (pH 7.0)>
[0071] Glucose (100 g), (NH.sub.4).sub.2SO.sub.4 (40 g), Soybean
Protein (2.5 g), Corn Steep Solids (5 g), Urea (3 g),
KH.sub.2PO.sub.4 (1 g), MgSO.sub.4.7H.sub.2O (0.5 g), Biotin (100
.mu.g), Thiamine HCl (1000 .mu.g), Calcium-Pantothenic Acid (2000
.mu.g), Nicotinamide (3000 .mu.g), and CaCO.sub.3 (30 g) (based on
1 L of distilled water)
[0072] The top 10 strains with highest L-lysine concentrations were
selected from the 53 different strains, and the culture and the
analysis described above were performed repeatedly. The L-lysine
concentrations analyzed are shown in Table 1 below.
TABLE-US-00003 TABLE 1 Concentration of L-Lysine Produced by 10
Selected Strains KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt) L-Lysine
(g/L) Batch Batch Batch Strain 1 2 3 Mean Control
KCCM11016P.DELTA.aceE/pCR2.1-aceE 42.1 41.9 41.7 41.9 (WT) 1
KCCM11016P.DELTA.aceE/pCR2.1-aceE 45.1 46.2 45.8 45.7 (mt)-1235 2
KCCM11016P.DELTA.aceE/pCR2.1-aceE 45.6 46.1 44.9 45.5 (mt)-1542 3
KCCM11016P.DELTA.aceE/pCR2.1-aceE 46.1 45.7 46.0 45.9 (mt)-3152 4
KCCM11016P.DELTA.aceE/pCR2.1-aceE 44.5 45.1 45.7 45.1 (mt)-5013 5
KCCM11016P.DELTA.aceE/pCR2.1-aceE 45.9 44.9 46.1 45.6 (mt)-5312 6
KCCM11016P.DELTA.aceE/pCR2.1-aceE 44.8 45.7 45.4 45.3 (mt)-6001 7
KCCM11016P.DELTA.aceE/pCR2.1-aceE 46.1 46.3 45.9 46.1 (mt)-7139 8
KCCM11016P.DELTA.aceE/pCR2.1-aceE 46.6 48.1 47.3 47.3 (mt)-8264 9
KCCM11016P.DELTA.aceE/pCR2.1-aceE 45.6 45.1 44.8 45.2 (mt)-9174 10
KCCM11016P.DELTA.aceE/pCR2.1-aceE 46.1 46.6 45.9 46.2 (mt)-9586
[0073] As a result of the analysis of L-lysine concentration, it
was confirmed that the L-lysine yield of the 10 selected strains
showed a maximum increase of 22% compared to the control strain,
KCCM11016P.DELTA.aceE/pCR2.1-aceE (WT) strain.
Example 5: Confirmation of aceE Gene Modification of Strains
Selected from the E1p Artificial Variant Library
[0074] In order to confirm the substitutions introduced in E1p of
the 10 strains selected in Example 4, the polynucleotide sequences
of modified aceE were analyzed. To determine the polynucleotide
sequences, PCR was performed using primer 1 (SEQ ID NO: 3) and
primer 2 (SEQ ID NO: 4).
TABLE-US-00004 primer 1 (SEQ ID NO: 3): 5'-TGGGA CCGGG AAACC GGG-3'
primer 2 (SEQ ID NO: 4): 5'-GATTT ATCTG TCCCT TGA-3'
[0075] The polynucleotide sequences of each of the modified-type of
aceE gene fragments obtained were confirmed by analysis, and
compared with the polynucleotide sequence of SEQ ID NO: 2, and thus
the amino acid sequences of the E1p variants were confirmed. The
information on the substitutions of the E1p amino acid sequences of
the selected strains is shown in Table 2 below.
TABLE-US-00005 TABLE 2 E1p Amino Acid Substitution of KCCM11016P/
pCR2.1-aceE (mt) of 10 Selected Strains E1p Amino Strain Acid
Substitution KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-1235 Q432E
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-1542 E190V
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-3152 L438P
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-5013 Q195H
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-5312 P199S
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-6001 K435A
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-7139 Q432A
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-8264 Y418H
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-9174 N428A
KCCM11016P.DELTA.aceE/pCR2.1-aceE (mt)-9586 Y201A
Example 6: Construction of a Vector for Introducing the E1p Variant
on Chromosome
[0076] In order to confirm the application effect of the E1p
variant confirmed in Example 5, a vector for introducing the same
on the chromosome was constructed.
[0077] The primer 9 (SEQ ID NO: 12), which is introduced with an
Xba I restriction site at 5' terminus, and the primer 10 (SEQ ID
NO: 13), which is introduced with an Xba I restriction site at 3'
terminus, were synthesized based on the reported polynucleotide
sequences. The aceE (mt) gene fragments of 10 different
modified-type of strains were amplified by PCR using the
chromosomes of the selected 10 different strains as templates,
respectively.
[0078] PCR was performed under the following conditions:
denaturation at 94.degree. C. for 5 min; 30 cycles of denaturation
at 94.degree. C. for 30 sec, annealing at 56.degree. C. for 30 sec,
and polymerization at 72.degree. C. for 2 min; and polymerization
at 72.degree. C. for 7 min.
TABLE-US-00006 primer 9 (SEQ ID NO: 12): 5'-AATCT AGATG GGACC GGGAA
ACCGG G-3' primer 10 (SEQ ID NO: 13): 5'-AATCT AGAGA TTTAT CTGTC
CCTTG A-3'
[0079] The PCR-amplified gene fragments of the 10 different strains
were treated with Xba I to obtain the respective DNA fragments
thereof, and the fragments were linked to the pDZ vector for
introducing chromosomes including an Xba I restriction site,
transformed into E. coli DH5.alpha., and streaked on solid LB
medium containing kanamycin (25 mg/L).
[0080] The transformed colonies transformed with a vector inserted
with a target gene were selected by PCR and the plasmids were
obtained by the conventionally known plasmid extraction method.
According to the modification inserted in E1p of each plasmid, the
plasmids were named as pDZ-E1p (Q432E), pDZ-E1p (E190V), pDZ-E1p
(L438P), pDZ-E1p (Q195H), pDZ-E1p (P199S), pDZ-E1p (K435A), pDZ-E1p
(Q432A), pDZ-E1p (Y418H), pDZ-E1p (N428A), and pDZ-E1p(Y201A),
respectively.
Example 7: Construction of a KCCM11016P-Derived Strain Introduced
with the E1p Variant and Comparison of their Abilities to Produce
L-Lysine
[0081] Corynebacterium glutamicum KCCM11016P, an L-lysine producing
strain, was transformed by a 2-step recombination of homologous
chromosomes using the 10 vectors for introducing the Novel E1p
variant prepared in Example 6. Then, the strains introduced with
the E1p variant on the chromosomes were selected by analyzing the
polynucleotide sequences, and the plasmids were named as
KCCM11016P::E1p (Q432E), KCCM11016P::E1p (E190V), KCCM11016P::E1p
(L438P), KCCM11016P::E1p (Q195H), KCCM11016P::E1p (P199S),
KCCM11016P::E1p (K435A), KCCM11016P::E1p (Q432A), KCCM11016P::E1p
(Y418H), KCCM11016P::E1p (N428A), and KCCM11016P::E1p (Y201A)
according to the inserted E1p variant, respectively.
[0082] The strains were cultured in the same manner as in Example
4, and the L-lysine concentrations of the cultures were analyzed.
For the measurement of the growth rate of the constructed strains,
the residual glucose concentration of the cultures was measured 18
hours after the initiation of the culture (Table 3).
TABLE-US-00007 TABLE 3 Concentration (g/L) of Residual Glucose and
L-Lysine Produced by KCCM11016P-Derived Strains Introduced with the
E1p variant Batch 1 Batch 2 Batch 3 Mean residual residual residual
residual Strain glucose L-lysine glucose L-lysine glucose L-lysine
glucose L-lysine Control KCCM11016P 35.8 42.8 34.5 41.6 35.1 43.1
35.1 42.5 1 KCCM11016P::E1p 41.2 46.2 40.5 45.8 42.1 45.2 41.3 45.7
(Q432E) 2 KCCM11016P::E1p 43.2 45.2 41.8 45.8 43 46.7 42.7 45.9
(E190V) 3 KCCM11016P::E1p 40.5 45.1 41.1 45.9 40.6 45.8 40.7 45.6
(L438P) 4 KCCM11016P::E1p 38.1 44.5 37.5 45.2 38.5 44.9 38.0 44.9
(Q195H) 5 KCCM11016P::E1p 44.1 46.2 43.5 45.9 44.8 44.8 43.8 45.6
(P199S) 6 KCCM11016P::E1p 44.1 45.2 43.5 45.1 42.9 46.5 43.5 45.6
(K435A) 7 KCCM11016P::E1p 40.5 46.5 38.9 46.1 40.3 45.8 39.9 46.1
(Q432A) 8 KCCM11016P::E1p 38.5 47.5 37.6 46.6 39.1 46.5 38.4 46.9
(Y418H) 9 KCCM11016P::E1p 42.5 45.7 43.1 44.6 40.5 45.8 42.0 45.4
(Y201A) 10 KCCM11016P::E1p 39.8 46.5 40.1 47.9 40.3 46.2 40.1 46.9
(N428A)
[0083] The novel 10 different strains (i.e., KCCM11016P::E1p
(Q432E), KCCM11016P::E1p (E190V), KCCM11016P::E1p (L438P),
KCCM11016P::E1p (Q195H), KCCM11016P::E1p (P199S), KCCM11016P::E1p
(K435A), KCCM11016P::E1p (Q432A), KCCM11016P::E1p (Y418H),
KCCM11016P::E1p (Y201A), and KCCM11016P::E1p (N428A)), showed a
slight decrease in glucose consumption rate while showing a maximum
increase of 10% in lysine production, compared to those of the
parent strain.
[0084] In this regard, the present inventors named KCCM11016P::E1p
(N428A), the representative strain among the strains with improved
ability to produce L-lysine, as Corynebacterium glutamicum
"CA01-2289," and deposited the strain with the Korean Culture
Center of Microorganisms, recognized as an international depositary
authority under the Budapest Treaty, on Oct. 23, 2014, under the
accession number KCCM11590P.
[0085] Upon examination, it was confirmed that the E1p variants of
the 10 different strains (i.e., E1p (Q432E) (SEQ ID NO: 14), E1p
(E190V) (SEQ ID NO: 15), E1p (L438P) (SEQ ID NO: 16), E1p (Q195H)
(SEQ ID NO: 17), E1p (P199S) (SEQ ID NO: 18), E1p (K435A) (SEQ ID
NO: 19), E1p (Q432A) (SEQ ID NO: 20), E1p (Y418H) (SEQ ID NO: 21),
E1p (Y201A) (SEQ ID NO: 22), and E1p (N428A) (SEQ ID NO: 23)) were
heavily distributed in two groups (amino acid residues at positions
from 190 to 201, and amino acids at positions from 418 to 438).
[0086] Ten different strains, in which substitutions belonging to
each group were included in combination, (i.e., (KCCM11016P::E1p
(E190V, Q195H), KCCM11016P::E1p (E190V, P199S), KCCM11016P::E1p
(Q195H, P199S), KCCM11016P::E1p (E190V, Y201A), KCCM11016P::E1p
(Q195H, Y201A), KCCM11016P::E1p (P199S, Y201A), KCCM11016P::E1p
(N428A, Q432E), KCCM11016P::E1p (N428A, K435A), KCCM11016P::E1p
(Y418H, K435A), KCCM11016P::E1p (Y418H, Q432A)) were synthesized,
and their abilities to produce L-lysine were measured in the same
manner as described above (Table 4).
TABLE-US-00008 TABLE 4 Concentration (g/L) of Residual Glucose and
L-Lysine Produced by KCCM11016P-Derived Strains Introduced with
Combination of E1p substitutions Batch 1 Batch 2 Batch 3 Mean
residual residual residual residual Strain glucose L-lysine glucose
L-lysine glucose L-lysine glucose L-lysine Control KCCM11016P 35.2
42.1 34.6 42.5 35.6 42.5 35.1 42.4 1 KCCM11016P::E1p 47.1 47.1 46.5
48.1 46 43.1 46.5 46.1 (E190V, Q195H) 2 KCCM11016P::E1p 45.2 45.2
46.3 46.1 46 45 45.8 45.4 (E190V, P199S) 3 KCCM11016P::E1p 46.2
49.8 45.7 48.7 44 48.5 45.3 49.0 (Q195H, P199S) 4 KCCM11016P::E1p
42.8 46.1 43.1 45.7 42.5 46 42.8 45.9 (E190V, Y201A) 5
KCCM11016P::E1p 48.3 45.3 47.5 47.1 47 46.2 47.6 46.2 (Q195H,
Y201A) 6 KCCM11016P::E1p 39.1 45.3 38.6 45.9 39.2 45.6 39.0 45.6
(P199S, Y201A) 7 KCCM11016P::E1p 45.9 48.1 47.1 49.2 46.5 49.3 46.5
48.9 (N428A, Q432E) 8 KCCM11016P::E1p 46.1 47.9 45.8 48.3 46.7 47.9
46.2 48.0 (N428A, K435A) 9 KCCM11016P::E1p 38.2 45.9 37.6 45.7 39.1
46 38.3 45.9 (Y418H, K435A) 10 KCCM11016P::E1p 41.2 46.1 40.9 45.1
39.9 47.2 40.7 46.1 (Y418H, Q432A)
[0087] As shown in Table above, all of the novel 10 strains with
combined substitutions showed a slight decrease in glucose
consumption rate while showing a maximum increase of 15.6% in the
ability to produce L-lysine. The results confirm that a strain
which is introduced with a combined substitution can exhibit
improved ability to produce L-lysine than a strain which is
introduced with single novel substitution.
[0088] The results confirm that the 10 strains with novel variants
of E1p protein are effective strains which can significantly
increasing an ability to produce L-lysine while not significantly
reducing glucose consumption rate, compared to that of the parent
strain, and also confirm that the amino acid residues at positions
from 190 to 205, or from 415 to 440 are major regions that can
exhibit the effects described above.
Example 8: Measurement of Activity of Pyruvate Dehydrogenase
Complex (PDHC) Regarding Strains Introduced with the E1p
Variant
[0089] The PDHC activity was measured regarding the selected
strains by the method reported in the previous journal (Schreiner
et al., J. Bacteriol. 187:6005, 2005). The control strains
KCCM11016P and KCCM11016P.DELTA.aceE, and the 10 selected strains
(KCCM11016P::E1p(Q432E), KCCM11016P::E1p(E190V),
KCCM11016P::E1p(L438P), KCCM11016P::E1p(Q195H),
KCCM11016P::E1p(P199S), KCCM11016P::E1p(K435A),
KCCM11016P::E1p(Q432A), KCCM11016P::E1p(Y418H),
KCCM11016P::E1p(Y201A), and KCCM11016P::E1p(N428A)), were
inoculated into 25 mL of the seed culture medium specified in
Example 4, and cultured until the late logarithmic phase.
[0090] The cells were collected by centrifugation and washed twice
with 100 mM Tris-HCl (pH 7.2, 3 mM L-cysteine, 10 mM MgCl.sub.2)
buffer solution, and finally suspended in 2 mL of the same buffer
solution. The suspension of the cells was physically crushed by the
general glass bead vortexing method for 10 minutes, and the
supernatant was recovered by performing centrifugation (13,000 rpm,
4.degree. C., and 30 min) twice and used as a crude extract for the
measurement of the activity of PDHC enzyme. For the measurement of
the activity of PDHC enzyme, a reaction solution (10 mM MgCl.sub.2,
3 mM cysteine, 2 mM NAD, 0.9 mM thiamine diphosphate, 0.25 mM
chlorpromazine, 6 mM pyruvate, 0.2 mM CoA in Tris-HCl buffer (pH
7.2)) for measuring the enzyme activity in an amount of 0.95 mL was
added with 0.05 mL of the crude extract, and reacted at 30.degree.
C. The activity unit of PDHC was defined in terms of NADH moles
consumed per minute, and the measurement results of the enzyme
activity are shown in Table 5 below.
TABLE-US-00009 TABLE 5 Measurement of Enzyme Activity of PDHC (%)
Strain PDHC Activity (%) KCCM11016P 100 KCCM11016P.DELTA.aceE 0
KCCM11016P::E1p (Q432E) 39 KCCM11016P::E1p (E190V) 56
KCCM11016P::E1p (L438P) 53 KCCM11016P::E1p (Q195H) 55
KCCM11016P::E1p (P199S) 51 KCCM11016P::E1p (K435A) 53
KCCM11016P::E1p (Q432A) 42 KCCM11016P::E1p (Y418H) 36
KCCM11016P::E1p (Y201A) 46 KCCM11016P::E1p (N428A) 35
[0091] The PDHC activity of the strains introduced with novel
variants showed the activity of 35% to 56% relative to the parent
strain.
Example 9: Comparison of an Ability to Produce L-Lysine with
aceE-Deletion Strain
[0092] For the comparative evaluation of KCCM11016P.DELTA.aceE, the
aceE-deletion strain constructed in Example 2, and the 10 selected
strains (KCCM11016P::E1p (Q432E), KCCM11016P::E1p (E190V),
KCCM11016P::E1p (L438P), KCCM11016P::E1p (Q195H), KCCM11016P::E1p
(P199S), KCCM11016P::E1p (K435A), KCCM11016P::E1p (Q432A),
KCCM11016P::E1p (Y418H), KCCM11016P::E1p (Y201A), and
KCCM11016P::E1p (N428A)), the strains were cultured in the same
manner as in Example 4 using media containing ammonium acetate. The
L-lysine concentration of the resulting cultures was analyzed by
HPLC, and for the measurement of the growth rate of the constructed
strains, the concentration of the residual glucose was measured 18
hours after the initiation of the culture (Table 6).
[0093] <Lysine-Producing Medium Containing Ammonium Acetate (pH
7.0)>
[0094] Glucose (100 g), CH.sub.3COONH.sub.3 (5 g),
(NH.sub.4).sub.2SO.sub.4 (40 g), Soybean Protein (2.5 g), Corn
Steep Solids (5 g), Urea (3 g), KH.sub.2PO.sub.4 (1 g),
MgSO.sub.4.7H.sub.2O (0.5 g), Biotin (100 .mu.g), Thiamine HCl
(1000 .mu.g), Calcium-Pantothenic Acid (2000 .mu.g), Nicotinamide
(3000 .mu.g), and CaCO.sub.3 (30 g) (based on 1 L of distilled
water)
TABLE-US-00010 TABLE 6 Concentration (g/L) of Residual Glucose and
L-Lysine Produced by KCCM11016P-Derived Strains Introduced with E1p
Variants and aceE-Deletion Strains Batch 1 Batch 2 Batch 3 Mean
residual residual residual residual Strain glucose L-lysine glucose
L-lysine glucose L-lysine glucose L-lysine Control KCCM11016P 45.7
40.9 45.6 42.1 46.7 41.3 46.0 41.4 Experimental
KCCM11016P.DELTA.aceE 67.1 45.6 66.8 45.2 68.2 45.4 67.4 45.4 Group
1 KCCM11016P::E1p 48.2 43.7 46.5 44.2 47.5 43.4 47.4 43.8 (Q432E) 2
KCCM11016P::E1p 49.7 44.6 47.8 43.8 48.1 44.4 48.5 44.3 (E190V) 3
KCCM11016P::E1p 47.9 45.3 48.9 43.2 47.5 44.6 48.1 44.4 (L438P) 4
KCCM11016P::E1p 46.7 42.9 46.3 43.6 45.6 43.0 46.2 43.2 (Q195H) 5
KCCM11016P::E1p 50.4 45.2 50.6 45.1 51.2 44.6 50.7 45.0 (P199S) 6
KCCM11016P::E1p 51.3 44.9 50.9 45.2 52.7 45.0 51.6 45.0 (K435A) 7
KCCM11016P::E1p 48.9 45.6 47.8 46.0 47.9 45.9 48.2 45.8 (Q432A) 8
KCCM11016P::E1p 44.6 45.8 45.7 46.5 47.3 46.3 45.9 46.2 (Y418H) 9
KCCM11016P::E1p 47.6 43.8 46.7 44.5 48.7 43.7 47.7 44.0 (Y201A) 10
KCCM11016P::E1p 49.7 46.2 47.8 45.2 48.3 45.7 48.6 45.7 (N428A)
[0095] The KCCM11016P.DELTA.aceE strain showed an increase of 9.6%
in the ability to produce L-lysine but a significantly reduced
growth rate, compared to the parent strain. In contrast, the
strains introduced with substitutions showed an increase in lysine
yield and glucose consumption rate similar to when ammonium acetate
was not added.
[0096] The results indicate that the strain introduced with the
aceE variants can produce lysine in high yield without a noticeable
effect in growth rate, compared to the aceE-deletion strain which
can increase lysine yield with a significant decrease in growth
rate.
Example 10: Construction of KFCC10750-Derived Strains Introduced
with the E1p Variant and Comparison of their Abilities to Produce
L-Lysine
[0097] For confirming the effects of introduction of 10 novel
variants in other strains of the genus Corynebacterium glutamicum,
strains in which each of the 10 different E1p variants was
respectively introduced into Corynebacterium glutamicum KFCC10750
(the above microorganism was first published as KFCC10750 and
re-deposited to an international depositary authority under the
Budapest Treaty and assigned the Accession No. KCCM11347P; Korean
Patent No. 10-0073610), an L-lysine producing strain, were
constructed in the same manner as in Example 7, and the strains
were named as KFCC10750::E1p (Q432E), KFCC10750::E1p (E190V),
KFCC10750::E1p (L438P), KFCC10750::E1p (Q195H), KFCC10750::E1p
(P199S), KFCC10750::E1p (K435A), KFCC10750::E1p (Q432A),
KFCC10750::E1p (Y418H), KFCC10750::E1p (Y201A), and KFCC10750::E1p
(N428A). The eleven strains including the KFCC10750 strain as the
control strain were cultured in the same manner as in Example 4,
and the L-lysine concentration of the cultures of the strains was
analyzed (Table 7).
TABLE-US-00011 TABLE 7 Concentration of L-Lysine Produced by
KCCM10750P- Derived Strains Introduced with The E1p variant
L-Lysine (g/L) Strain Batch 1 Batch 2 Batch 3 Mean Control
KFCC10750 38.8 38.1 37.9 38.3 1 KFCC10750::E1p (Q432E) 43.1 42.8
43.5 43.1 2 KFCC10750::E1p (E190V) 41.2 42.1 41.8 41.7 3
KFCC10750::E1p (L438P) 40.9 41.3 41.5 41.2 4 KFCC10750::E1p (Q195H)
41.6 42.3 41.8 41.9 5 KFCC10750::E1p (P199S) 42 42.4 41.9 42.1 6
KFCC10750::E1p (K435A) 41.8 42.1 42.2 42.0 7 KFCC10750::E1p (Q432A)
40.2 41.1 41.2 40.8 8 KFCC10750::E1p (Y418H) 44.5 44.9 44.8 44.7 9
KFCC10750::E1p (Y201A) 40.9 41 41.1 41.0 10 KFCC10750::E1p (N428A)
44.5 44.1 45.8 44.8
[0098] As a result, it was confirmed that the 10 different strains
introduced with novel variants had a maximum increase of 17% of the
ability to produce L-lysine compared to the parent strain.
Example 11: Construction of KCCM10770P-Derived Strains Introduced
with the E1p Variant and Comparison of their Abilities to Produce
L-Lysine
[0099] For confirming the effects of introduction of 10 novel
variants in other strains of the genus Corynebacterium glutamicum,
strains in which each E1p variant was introduced into
Corynebacterium glutamicum KCCM10770P (Korean Patent No.
10-0924065), an L-lysine producing strain, were constructed in the
same manner as in Example 7, and the strains were named as
KCCM10770P::E1p (Q432E), KCCM10770P::E1p (E190V), KCCM10770P::E1p
(L438P), KCCM10770P::E1p (Q195H), KCCM10770P::E1p (P199S),
KCCM10770P::E1p (K435A), KCCM10770P::E1p (Q432A), KCCM10770P::E1p
(Y418H), KCCM10770P::E1p (Y201A), and KCCM10770P::E1p (N428A). The
strains including the KFCC10750 strain as the control strain were
cultured in the same manner as in Example 4, and the L-lysine
concentration of the cultures of the strains was analyzed (Table
8).
TABLE-US-00012 TABLE 8 Concentration of L-Lysine Produced by
KCCM10770P- Derived Strains Introduced with the E1p variant
L-Lysine (g/L) Batch Strain 1 Batch 2 Batch 3 Mean Control
KCCM10770P 48.1 47.5 47.8 47.8 1 KCCM10770P::E1p (Q432E) 53.3 53.4
54.1 53.6 2 KCCM10770P::E1p (E190V) 51.2 52.1 52.8 52.0 3
KCCM10770P::E1p (L438P) 51.5 51.3 50.7 51.2 4 KCCM10770P::E1p
(Q195H) 51.9 52.1 52 52.0 5 KCCM10770P::E1p (P199S) 51.3 52.1 52.7
52.0 6 KCCM10770P::E1p (K435A) 52.4 52.6 51.4 52.1 7
KCCM10770P::E1p (Q432A) 50.2 51.2 50 50.5 8 KCCM10770P::E1p (Y418H)
55.8 54.5 54.1 54.8 9 KCCM10770P::E1p (Y201A) 49.9 50.3 50.7 50.3
10 KCCM10770P::E1p(N428A) 56.1 55.7 55.9 55.9
[0100] As a result, it was confirmed that the 10 strains introduced
with novel variants had a maximum increase of 17% of the ability to
produce L-lysine compared to the parent strain.
Example 12: Construction of CJ3P-Derived Strains Introduced with
the E1p Variant and Comparison of their Abilities to Produce
L-Lysine
[0101] For confirming the effects of introduction of E1p variants
in other strains of the genus Corynebacterium glutamicum, strains
in which each E1p variant was introduced into Corynebacterium
glutamicum CJ3P (Binder et al., Genome Biology 2012, 13: R40), an
L-lysine producing strain, were constructed in the same manner as
in Example 7, and the strains were named as CJ3P::E1p (Q432E),
CJ3P::E1p (E190V), CJ3P::E1p (L438P), CJ3P::E1p (Q195H), CJ3P::E1p
(P199S), CJ3P::E1p (K435A), CJ3P::E1p (Q432A), CJ3P::E1p (Y418H),
CJ3P::E1p (Y201A), and CJ3P::E1p (N428A). The strains were cultured
in the same manner as in Example 4, and the L-lysine concentration
of the cultures of the strains was analyzed (Table 9).
TABLE-US-00013 TABLE 9 Concentration of L-Lysine Produced by
CJ3P-Derived Strains Introduced with the E1p variant L-Lysine (g/L)
Strain Batch 1 Batch 2 Batch 3 Mean Control CJ3P 8.2 8.3 8 8.2 1
CJ3P::E1p (Q432E) 9.5 9.3 9.4 9.4 2 CJ3P::E1p (E190V) 8.8 9 8.7 8.8
3 CJ3P::E1p (L438P) 9.1 8.7 8.9 8.9 4 CJ3P::E1p (Q195H) 9.2 8.9 9
9.0 5 CJ3P::E1p (P199S) 9.3 9 9.1 9.1 6 CJ3P::E1p (K435A) 9.1 9 8.9
9.0 7 CJ3P::E1p (Q432A) 8.7 8.9 8.8 8.8 8 CJ3P::E1p (Y418H) 9.6 9.6
9.5 9.6 9 CJ3P::E1p (Y201A) 8.7 8.7 8.9 8.8 10 CJ3P::E1p (N428A)
9.7 9.8 9.8 9.8
[0102] As a result, it was confirmed that the 10 different strains
introduced with novel variants had a maximum increase of 19.5% of
the ability to produce L-lysine, compared to the parent strain.
[0103] The results indicate that each of the newly obtained 10
different strains with the E1p variant (E1p (Q432E), E1p (E190V),
E1p (L438P), E1p (Q195H), E1p (P199S), E1p (K435A), E1p (Q432A),
E1p (Y418H), E1p (Y201A), and E1p (N428A)) has excellent effect of
increasing the ability to produce L-lysine, respectively.
Example 13: Construction of KCCM11201P-Derived Strains Introduced
with the E1p Variant and Comparison of their Abilities to Produce
L-Valine
[0104] For confirming the effects of the 10 selected strains with
E1p variants in other amino acids-producing strains of the genus
Corynebacterium glutamicum, strains in which the E1p variant was
introduced into Corynebacterium glutamicum KFCC11201P (Korean
Patent No. 10-1117022), an L-valine producing strain, were
constructed in the same manner as in Example 7, and the strains
were named as KCCM11201P::E1p (Q432E), KCCM11201P::E1p (E190V),
KCCM11201P::E1p (L438P), KCCM11201P::E1p (Q195H), KCCM11201P::E1p
(P199S), KCCM11201P::E1p (K435A), KCCM11201P::E1p (Q432A),
KCCM11201P::E1p (Y418H), KCCM11201P::E1p (Y201A), and
KCCM11201P::E1p (N428A).
[0105] For the evaluation of the strains, each of the strains was
inoculated into 250 mL corner-baffle flasks containing 25 mL of
L-valine specified below, respectively, and cultured in a shaking
incubator (200 rpm) at 30.degree. C. for 20 hours. The L-valine
concentration in each culture was analyzed via HPLC (Table 10).
[0106] <Valine-Producing Medium (pH 7.2)>
[0107] Glucose (50 g), (NH.sub.4).sub.2SO.sub.4 (20 g), Corn Steep
liquid (20 g), KH.sub.2PO.sub.4 (1 g), MgSO.sub.4.7H.sub.2O (0.5
g), Biotin (200 .mu.g), and CaCO.sub.3 (30 g) (based on 1 L of
distilled water)
TABLE-US-00014 TABLE 10 Concentration of L-valine Produced by
KCCM11201P-Derived Strains Introduced with the E1p variant L-valine
(g/L) Strain Batch 1 Batch 2 Mean Control KCCM11201P 2.8 2.8 2.8 1
KCCM11201P::E1p (Q432E) 3.1 3.0 3.1 2 KCCM11201P::E1p (E190V) 3.3
3.2 3.3 3 KCCM11201P::E1p (L438P) 3.2 3.2 3.2 4 KCCM11201P::E1p
(Q195H) 3.0 3.1 3.1 5 KCCM11201P::E1p (P199S) 3.1 3.3 3.2 6
KCCM11201P::E1p (K435A) 3.1 3.1 3.1 7 KCCM11201P::E1p (Q432A) 3.2
3.2 3.2 8 KCCM11201P::E1p (Y418H) 3.3 3.4 3.4 9 KCCM11201P::E1p
(Y201A) 3.0 3.0 3.0 10 KCCM11201P::E1p (N428A) 3.4 3.4 3.4
[0108] As a result, it was confirmed that the 10 different strains
introduced with novel variants had a maximum increase of 21% of the
ability to produce L-valine, compared to the parent strain.
Example 14: Construction of Wild Type-Derived Strains Introduced
with the E1p Variant and Comparison of their Abilities to Produce
L-Valine
[0109] For reconfirming the ability to produce L-valine for the
four different variants, among the 10 selected E1p variants, which
showed the effect of a high increase in L-valine yield, strains in
which each E1p variant was introduced into Corynebacterium
glutamicum ATCC13032 were constructed in the same manner as in
Example 7, and the strains were named as ATCC13032::E1p (E190V),
ATCC13032::E1p (L438P), ATCC13032::E1p (Y418H), and ATCC13032::E1p
(N428A).
[0110] For confirming the ability to produce L-valine for the above
strains, each of the strains was transformed with pECCG117-DvalS
(Korean Patent Application Publication No. 10-2014-0111421), which
is an overexpression vector for L-valine biosynthesis, by
electroporation. The transformed strains were obtained from
selective media containing kanamycin (25 mg/L) and named as
ATCC13032::E1p (E190V)_DvalS, ATCC13032::E1p (L438P)_DvalS,
ATCC13032::E1p (Y418H)_DvalS, and ATCC13032::E1p (N428A)_DvalS.
[0111] The strains were cultured in the same manner as in Example
13 and the concentration of L-valine in each culture was analyzed
(Table 11).
TABLE-US-00015 TABLE 11 Concentration of L-valine Produced by Wild
Type-Derived Strains Introduced with the E1p variant L-valine (g/L)
Strain Batch 1 Batch 2 Mean ATCC13032 0.1 0.1 0.1 Control
ATCC13032_DvalS 1.3 1.2 1.3 1 ATCC13032::E1p (E190V) 0.1 0.1 0.1 2
ATCC13032::E1p (E190V)_DvalS 1.5 1.7 1.6 3 ATCC13032::E1p (L438P)
0.1 0.1 0.1 4 ATCC13032::E1p (L438P)_DvalS 1.4 1.4 1.4 5
ATCC13032::E1p (Y418H) 0.1 0.1 0.1 6 ATCC13032::E1p (Y418H)_DvalS
1.8 1.7 1.8 7 ATCC13032::E1p (N428A) 0.1 0.1 0.1 8 ATCC13032::E1p
(N428A)_DvalS 1.9 1.7 1.8
[0112] As a result, it was confirmed that the four different
strains introduced with novel variants had a maximum increase of
38% of the ability to produce L-valine, compared to the control
strain.
[0113] From the foregoing, a skilled person in the art to which the
present disclosure pertains will be able to understand that the
present disclosure may be embodied in other specific forms without
modifying the technical concepts or essential characteristics of
the present disclosure. In this regard, the exemplary embodiments
disclosed herein are only for illustrative purposes and should not
be construed as limiting the scope of the present disclosure. On
the contrary, the present disclosure is intended to cover not only
the exemplary embodiments but also various alternatives,
modifications, equivalents, and other embodiments that may be
included within the spirit and scope of the present disclosure as
defined by the appended claims.
Sequence CWU 1
1
331922PRTCorynebacterium glutamicum ATCC13032 1Met Ala Asp Gln Ala
Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile
Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu
Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser
Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg
Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92022769DNACorynebacterium
glutamicum ATCC13032 2atggccgatc aagcaaaact tggtggcaag ccctcggatg
actctaactt cgcgatgatc 60cgcgatggcg tggcatctta tttgaacgac tcagatccgg
aggagaccaa cgagtggatg 120gattcactcg acggattact ccaggagtct
tctccagaac gtgctcgtta cctcatgctt 180cgtttgcttg agcgtgcatc
tgcaaagcgc gtatctcttc ccccaatgac gtcaaccgac 240tacgtcaaca
ccattccaac ctctatggaa cctgaattcc caggcgatga ggaaatggag
300aagcgttacc gtcgttggat tcgctggaac gcagccatca tggttcaccg
cgctcagcga 360ccaggcatcg gcgtcggcgg acacatttcc acttacgcag
gcgcagcccc tctgtacgaa 420gttggcttca accacttctt ccgcggcaag
gatcacccag gcggcggcga ccagatcttc 480ttccagggcc acgcatcacc
aggtatgtac gcacgtgcat tcatggaggg tcgcctttct 540gaagacgatc
tcgatggctt ccgtcaggaa gtttcccgtg agcagggtgg cattccgtcc
600taccctcacc cacacggtat gaaggacttc tgggagttcc caactgtgtc
catgggtctt 660ggcccaatgg atgccattta ccaggcacgt ttcaaccgct
acctcgaaaa ccgtggcatc 720aaggacacct ctgaccagca cgtctgggcc
ttccttggcg acggcgaaat ggacgagcca 780gaatcacgtg gtctcatcca
gcaggctgca ctgaacaacc tggacaacct gaccttcgtg 840gttaactgca
acctgcagcg tctcgacgga cctgtccgcg gtaacaccaa gatcatccag
900gaactcgagt ccttcttccg tggcgcaggc tggtctgtga tcaaggttgt
ttggggtcgc 960gagtgggatg aacttctgga gaaggaccag gatggtgcac
ttgttgagat catgaacaac 1020acctccgatg gtgactacca gaccttcaag
gctaacgacg gcgcatatgt tcgtgagcac 1080ttcttcggac gtgacccacg
caccgcaaag ctcgttgaga acatgaccga cgaagaaatc 1140tggaagcttc
cacgtggcgg ccacgattac cgcaaggttt acgcagccta caagcgagct
1200cttgagacca aggatcgccc aaccgtcatc cttgctcaca ccattaaggg
ctacggactc 1260ggccacaact tcgaaggccg taacgcaacc caccagatga
agaagctgac gcttgatgat 1320ctgaagttgt tccgcgacaa gcagggcatc
ccaatcaccg atgagcagct ggagaaggat 1380ccttaccttc ctccttacta
ccacccaggt gaagacgctc ctgaaatcaa gtacatgaag 1440gaacgtcgcg
cagcgctcgg tggctacctg ccagagcgtc gtgagaacta cgatccaatt
1500caggttccac cactggataa gcttcgctct gtccgtaagg gctccggcaa
gcagcagatc 1560gctaccacca tggcgactgt tcgtaccttc aaggaactga
tgcgcgataa gggcttggct 1620gatcgccttg tcccaatcat tcctgatgag
gcacgtacct tcggtcttga ctcttggttc 1680ccaaccttga agatctacaa
cccgcacggt cagaactacg tgcctgttga ccacgacctg 1740atgctctcct
accgtgaggc acctgaagga cagatcctgc acgaaggcat caacgaggct
1800ggttccgtgg catcgttcat cgctgcgggt acctcctacg ccacccacgg
caaggccatg 1860attccgctgt acatcttcta ctcgatgttc ggattccagc
gcaccggtga ctccatctgg 1920gcagcagccg atcagatggc acgtggcttc
ctcttgggcg ctaccgcagg tcgcaccacc 1980ctgaccggtg aaggcctcca
gcacatggat ggacactccc ctgtcttggc ttccaccaac 2040gagggtgtcg
agacctacga cccatccttt gcgtacgaga tcgcacacct ggttcaccgt
2100ggcatcgacc gcatgtacgg cccaggcaag ggtgaagatg ttatctacta
catcaccatc 2160tacaacgagc caaccccaca gccagctgag ccagaaggac
tggacgtaga aggcctgcac 2220aagggcatct acctctactc ccgcggtgaa
ggcaccggcc atgaggcaaa catcttggct 2280tccggtgttg gtatgcagtg
ggctctcaag gctgcatcca tccttgaggc tgactacgga 2340gttcgtgcca
acatttactc cgctacttct tgggttaact tggctcgcga tggcgctgct
2400cgtaacaagg cacagctgcg caacccaggt gcagatgctg gcgaggcatt
cgtaaccacc 2460cagctgaagc agacctccgg cccatacgtt gcagtgtctg
acttctccac tgatctgcca 2520aaccagatcc gtgaatgggt cccaggcgac
tacaccgttc tcggtgcaga tggcttcggt 2580ttctctgata cccgcccagc
tgctcgtcgc ttcttcaaca tcgacgctga gtccattgtt 2640gttgcagtgc
tgaactccct ggcacgcgaa ggcaagatcg acgtctccgt tgctgctcag
2700gctgctgaga agttcaagtt ggatgatcct acgagtgttt ccgtagatcc
aaacgctcct 2760gaggaataa 2769318DNAArtificial SequencePrimer 1
3tgggaccggg aaaccggg 18418DNAArtificial SequencePrimer 2
4gatttatctg tcccttga 18536DNAArtificial SequencePrimer 3
5gcaggtcgac tctagatgcg attcgcgtca aacgtg 36630DNAArtificial
SequencePrimer 4 6gtcccttgag gtgatgtgaa tccatccact
30730DNAArtificial SequencePrimer 5 7agtggatgga ttcacatcac
ctcaagggac 30836DNAArtificial SequencePrimer 6 8ccggggatcc
tctagacgaa gcgccgtgag caattc 369521DNAArtificial SequenceaceE gene
fragment comprising 5' end of aceE gene 9gcaggtcgac tctagatgcg
attcgcgtca aacgtgagag aaacatcaca tctcgcggga 60aactacccga taattctttg
caaaactttg caaagcggaa tgaacatgca gctagtttcc 120gtagaaatgt
tctttaaaaa atccacaaca attgccagga agcacaccga ttgatggata
180cctgaaatcc cagtgagcgc accgctcccc ttacgtcaca gtctgtaaaa
caaatcttcg 240gtgttgcgta tccttgttaa taacttatgc gttgactcat
tcgtgcactt cggcgtgtca 300caattaggta cgaccaagaa tgggaccggg
aaaccgggac gtataaacga aataaaacat 360tccaacagga ggtgtggaaa
tggccgatca agcaaaactt ggtggcaagc cctcggatga 420ctctaacttc
gcgatgatcc gcgatggcgt ggcatcttat ttgaacgact cagatccgga
480ggagaccaac gagtggatgg attcacatca cctcaaggga c
52110538DNAArtificial SequenceaceE gene fragment comprising 3' end
of aceE gene 10agtggatgga ttcacatcac ctcaagggac agataaatcc
cgccgccaga cgttagtctg 60gcggcgggat tcgtcgtaaa gcaagctctt tttagccgag
gaacgccttg tcagacaatg 120ttgcgccctt gatgttggcg aactcctgca
gcaaatcgcg cacagtcaac ttcgacttgg 180tagcctgatc tgcctggtag
acaatctggc cttcatgcat catgatcagg cgattgccca 240ggcgaattgc
ctgttccatg ttgtgcgtga ccataagcgt agtcagattt ccatctgcca
300cgatcttttc ggtcaaggtg gtcacaagct ctgcacgctg tggatcaagc
gctgcggtgt 360gctcatccaa cagcatgatt ttaggttgag taaaaccagc
catcagcagg gacaatgcct 420gacgctgacc gccagagagc aaaccaactt
tggcagtgag cctgttttcc agacccagct 480caaggcgctc aagttcctgc
ttgaattgct cacggcgctt cgtctagagg atccccgg 538111029DNAArtificial
SequenceDelta aceE 11gcaggtcgac tctagatgcg attcgcgtca aacgtgagag
aaacatcaca tctcgcggga 60aactacccga taattctttg caaaactttg caaagcggaa
tgaacatgca gctagtttcc 120gtagaaatgt tctttaaaaa atccacaaca
attgccagga agcacaccga ttgatggata 180cctgaaatcc cagtgagcgc
accgctcccc ttacgtcaca gtctgtaaaa caaatcttcg 240gtgttgcgta
tccttgttaa taacttatgc gttgactcat tcgtgcactt cggcgtgtca
300caattaggta cgaccaagaa tgggaccggg aaaccgggac gtataaacga
aataaaacat 360tccaacagga ggtgtggaaa tggccgatca agcaaaactt
ggtggcaagc cctcggatga 420ctctaacttc gcgatgatcc gcgatggcgt
ggcatcttat ttgaacgact cagatccgga 480ggagaccaac gagtggatgg
attcacatca cctcaaggga cagataaatc ccgccgccag 540acgttagtct
ggcggcggga ttcgtcgtaa agcaagctct ttttagccga ggaacgcctt
600gtcagacaat gttgcgccct tgatgttggc gaactcctgc agcaaatcgc
gcacagtcaa 660cttcgacttg gtagcctgat ctgcctggta gacaatctgg
ccttcatgca tcatgatcag 720gcgattgccc aggcgaattg cctgttccat
gttgtgcgtg accataagcg tagtcagatt 780tccatctgcc acgatctttt
cggtcaaggt ggtcacaagc tctgcacgct gtggatcaag 840cgctgcggtg
tgctcatcca acagcatgat tttaggttga gtaaaaccag ccatcagcag
900ggacaatgcc tgacgctgac cgccagagag caaaccaact ttggcagtga
gcctgttttc 960cagacccagc tcaaggcgct caagttcctg cttgaattgc
tcacggcgct tcgtctagag 1020gatccccgg 10291226DNAArtificial
SequencePrimer 9 12aatctagatg ggaccgggaa accggg 261326DNAArtificial
SequencePrimer 10 13aatctagaga tttatctgtc ccttga
2614922PRTArtificial SequenceE1p(Q432E) 14Met Ala Asp Gln Ala Lys
Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg
Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr
Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser
Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala
Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Glu 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn
Tyr Val Pro Val 565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu
Ala Pro Glu Gly Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala
Gly Ser Val Ala Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala
Thr His Gly Lys Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser
Met Phe Gly Phe Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala
Ala Ala Asp Gln Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650
655Gly Arg Thr Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His
660 665 670Ser Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr
Asp Pro 675 680 685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg
Gly Ile Asp Arg 690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val
Ile Tyr Tyr Ile Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln
Pro Ala Glu Pro Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys
Gly Ile Tyr Leu Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu
Ala Asn Ile Leu Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu
Lys Ala Ala Ser Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775
780Ile Tyr Ser Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala
Ala785 790 795 800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp
Ala Gly Glu Ala 805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser
Gly Pro Tyr Val Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro
Asn Gln Ile Arg Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu
Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala
Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val
Ala Val Leu Asn Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890
895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser
900 905 910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92015922PRTArtificial SequenceE1p(E190V) 15Met Ala Asp Gln Ala Lys
Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg
Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr
Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser
Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala
Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Val Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92016922PRTArtificial
SequenceE1p(L438P) 16Met Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro
Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg Asp Gly Val Ala Ser
Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp
Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg
Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val
Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile
Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu
Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala Ala 100 105 110Ile Met
Val His Arg Ala Gln Arg Pro Gly Ile Gly Val Gly Gly His 115 120
125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn
130 135 140His Phe Phe Arg Gly Lys Asp His Pro Gly Gly Gly Asp Gln
Ile Phe145 150 155 160Phe Gln Gly His Ala Ser Pro Gly Met Tyr Ala
Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser Glu Asp Asp Leu Asp
Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu Gln Gly Gly Ile Pro
Ser Tyr Pro His Pro His Gly Met Lys 195 200 205Asp Phe Trp Glu Phe
Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp 210 215 220Ala Ile Tyr
Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg Gly Ile225 230 235
240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe Leu Gly Asp Gly Glu
245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala
Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn
Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile
Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser
Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu
Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn
Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp
Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360
365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro
370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys
Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu
Ala His Thr Ile Lys 405 410 415Gly Tyr Gly Leu Gly His Asn Phe Glu
Gly Arg Asn Ala Thr His Gln 420 425 430Met Lys Lys Leu Thr Pro Asp
Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr
Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr
His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475
480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn
485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser
Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met
Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly
Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg
Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile
Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp
Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu
His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600
605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr
610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser
Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu
Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly
Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr
Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu
Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly
Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715
720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val
725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu
Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly
Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp
Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val
Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln
Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr
Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser
Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840
845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr
850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser
Ile Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly
Lys Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe
Lys Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala
Pro Glu Glu 915 92017922PRTArtificial SequenceE1p(Q195H) 17Met Ala
Asp Gln Ala Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe
Ala Met Ile Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25
30Pro Glu Glu Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln
35 40 45Glu Ser Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu
Glu 50 55 60Arg Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser
Thr Asp65 70 75 80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu
Phe Pro Gly Asp 85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile
Arg Trp Asn Ala Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro
Gly Ile Gly Val Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala
Ala Pro Leu Tyr Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly
Lys Asp His Pro Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln
Gly His Ala Ser Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170
175Gly Arg Leu Ser Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser
180 185 190Arg Glu His Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly
Met Lys 195 200 205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu
Gly Pro Met Asp 210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr
Leu Glu Asn Arg Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His
Val Trp Ala Phe Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro
Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu
Asp Asn Leu Thr Phe Val Val Asn Cys Asn Leu Gln Arg Leu 275 280
285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser
290 295 300Phe Phe Arg Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp
Gly Arg305 310 315 320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp
Gly Ala Leu Val Glu 325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp
Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu
His Phe Phe Gly Arg Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu
Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly
His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395
400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys
405 410 415Gly Tyr Gly Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr
His Gln 420 425 430Met Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe
Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu
Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr His Pro Gly Glu Asp
Ala Pro Glu Ile Lys Tyr Met Lys465 470 475 480Glu Arg Arg Ala Ala
Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro
Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser Val Arg 500 505 510Lys
Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met Ala Thr Val Arg 515 520
525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val
530 535 540Pro Ile Ile Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser
Trp Phe545 550 555 560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln
Asn Tyr Val Pro Val 565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg
Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu
Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr
Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr
Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser Ile Trp625 630 635
640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala
645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp
Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu
Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu Ile Ala His Leu Val
His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly Pro Gly Lys Gly Glu
Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715 720Tyr Asn Glu Pro Thr
Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val 725 730 735Glu Gly Leu
His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly
His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly Met Gln Trp Ala 755 760
765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn
770 775 780Ile Tyr Ser Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly
Ala Ala785 790 795 800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala
Asp Ala Gly Glu Ala 805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr
Ser Gly Pro Tyr Val Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu
Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val
Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala
Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser Ile Val865 870 875
880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser
885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro
Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92018922PRTArtificial SequenceE1p(P199S) 18Met Ala Asp Gln Ala Lys
Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg
Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr
Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser
Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala
Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Ser Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92019922PRTArtificial
SequenceE1p(K435A) 19Met Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro
Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg Asp Gly Val Ala Ser
Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp
Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg
Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val
Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile
Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu
Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala Ala 100 105 110Ile Met
Val His Arg Ala Gln Arg Pro Gly Ile Gly Val Gly Gly His 115 120
125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn
130 135 140His Phe Phe Arg Gly Lys Asp His Pro Gly Gly Gly Asp Gln
Ile Phe145 150 155 160Phe Gln Gly His Ala Ser Pro Gly Met Tyr Ala
Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser Glu Asp Asp Leu Asp
Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu Gln Gly Gly Ile Pro
Ser Tyr Pro His Pro His Gly Met Lys 195 200 205Asp Phe Trp Glu Phe
Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp 210 215 220Ala Ile Tyr
Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg Gly Ile225 230 235
240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe Leu Gly Asp Gly Glu
245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala
Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn
Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile
Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser
Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu
Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn
Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp
Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360
365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro
370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys
Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu
Ala His Thr Ile Lys 405 410 415Gly Tyr Gly Leu Gly His Asn Phe Glu
Gly Arg Asn Ala Thr His Gln 420 425 430Met Lys Ala Leu Thr Leu Asp
Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr
Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr
His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475
480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn
485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser
Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met
Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly
Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg
Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile
Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp
Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu
His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600
605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr
610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser
Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu
Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly
Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr
Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu
Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly
Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715
720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val
725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu
Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly
Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp
Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val
Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln
Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr
Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser
Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840
845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr
850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser
Ile Val865 870 875
880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser
885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro
Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92020922PRTArtificial SequenceE1p(Q432A) 20Met Ala Asp Gln Ala Lys
Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg
Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr
Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser
Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala
Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Ala 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92021922PRTArtificial
SequenceE1p(Y418H) 21Met Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro
Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg Asp Gly Val Ala Ser
Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp
Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg
Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val
Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile
Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu
Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala Ala 100 105 110Ile Met
Val His Arg Ala Gln Arg Pro Gly Ile Gly Val Gly Gly His 115 120
125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn
130 135 140His Phe Phe Arg Gly Lys Asp His Pro Gly Gly Gly Asp Gln
Ile Phe145 150 155 160Phe Gln Gly His Ala Ser Pro Gly Met Tyr Ala
Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser Glu Asp Asp Leu Asp
Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu Gln Gly Gly Ile Pro
Ser Tyr Pro His Pro His Gly Met Lys 195 200 205Asp Phe Trp Glu Phe
Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp 210 215 220Ala Ile Tyr
Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg Gly Ile225 230 235
240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe Leu Gly Asp Gly Glu
245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala
Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn
Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile
Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser
Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu
Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn
Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp
Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360
365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro
370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys
Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu
Ala His Thr Ile Lys 405 410 415Gly His Gly Leu Gly His Asn Phe Glu
Gly Arg Asn Ala Thr His Gln 420 425 430Met Lys Lys Leu Thr Leu Asp
Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr
Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr
His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475
480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn
485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser
Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met
Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly
Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg
Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile
Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp
Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu
His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600
605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr
610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser
Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu
Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly
Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr
Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu
Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly
Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715
720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val
725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu
Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly
Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp
Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val
Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln
Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr
Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser
Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840
845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr
850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser
Ile Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly
Lys Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe
Lys Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala
Pro Glu Glu 915 92022922PRTArtificial SequenceE1p(Y201A) 22Met Ala
Asp Gln Ala Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe
Ala Met Ile Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25
30Pro Glu Glu Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln
35 40 45Glu Ser Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu
Glu 50 55 60Arg Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser
Thr Asp65 70 75 80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu
Phe Pro Gly Asp 85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile
Arg Trp Asn Ala Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro
Gly Ile Gly Val Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala
Ala Pro Leu Tyr Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly
Lys Asp His Pro Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln
Gly His Ala Ser Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170
175Gly Arg Leu Ser Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser
180 185 190Arg Glu Gln Gly Gly Ile Pro Ser Ala Pro His Pro His Gly
Met Lys 195 200 205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu
Gly Pro Met Asp 210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr
Leu Glu Asn Arg Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His
Val Trp Ala Phe Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu
Ser Arg Gly Leu Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp
Asn Leu Thr Phe Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp
Gly Pro Val Arg Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295
300Phe Phe Arg Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly
Arg305 310 315 320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly
Ala Leu Val Glu 325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr
Gln Thr Phe Lys Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His
Phe Phe Gly Arg Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn
Met Thr Asp Glu Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His
Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu
Glu Thr Lys Asp Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410
415Gly Tyr Gly Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln
420 425 430Met Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp
Lys Gln 435 440 445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp
Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro
Glu Ile Lys Tyr Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly
Gly Tyr Leu Pro Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln
Val Pro Pro Leu Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser
Gly Lys Gln Gln Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr
Phe Lys Glu Leu Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535
540Pro Ile Ile Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp
Phe545 550 555 560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn
Tyr Val Pro Val 565
570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln
Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser
Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala
Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln
Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met
Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr
Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser Pro
Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92023922PRTArtificial
SequenceE1p(N428A) 23Met Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro
Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg Asp Gly Val Ala Ser
Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp
Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg
Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val
Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile
Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu
Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala Ala 100 105 110Ile Met
Val His Arg Ala Gln Arg Pro Gly Ile Gly Val Gly Gly His 115 120
125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn
130 135 140His Phe Phe Arg Gly Lys Asp His Pro Gly Gly Gly Asp Gln
Ile Phe145 150 155 160Phe Gln Gly His Ala Ser Pro Gly Met Tyr Ala
Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser Glu Asp Asp Leu Asp
Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu Gln Gly Gly Ile Pro
Ser Tyr Pro His Pro His Gly Met Lys 195 200 205Asp Phe Trp Glu Phe
Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp 210 215 220Ala Ile Tyr
Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg Gly Ile225 230 235
240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe Leu Gly Asp Gly Glu
245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala
Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn
Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile
Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser
Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu
Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn
Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp
Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360
365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro
370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys
Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu
Ala His Thr Ile Lys 405 410 415Gly Tyr Gly Leu Gly His Asn Phe Glu
Gly Arg Ala Ala Thr His Gln 420 425 430Met Lys Lys Leu Thr Leu Asp
Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr
Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr
His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475
480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn
485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser
Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met
Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly
Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg
Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile
Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp
Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu
His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600
605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr
610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser
Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu
Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly
Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr
Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu
Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly
Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715
720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val
725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu
Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly
Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp
Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val
Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln
Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr
Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser
Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840
845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr
850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser
Ile Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly
Lys Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe
Lys Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala
Pro Glu Glu 915 92024922PRTArtificial SequenceE190V, Q195H 24Met
Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10
15Phe Ala Met Ile Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp
20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu
Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu
Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr
Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro
Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp
Ile Arg Trp Asn Ala Ala 100 105 110Ile Met Val His Arg Ala Gln Arg
Pro Gly Ile Gly Val Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly
Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg
Gly Lys Asp His Pro Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe
Gln Gly His Ala Ser Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170
175Gly Arg Leu Ser Glu Asp Asp Leu Asp Gly Phe Arg Gln Val Val Ser
180 185 190Arg Glu His Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly
Met Lys 195 200 205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu
Gly Pro Met Asp 210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr
Leu Glu Asn Arg Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His
Val Trp Ala Phe Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu
Ser Arg Gly Leu Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp
Asn Leu Thr Phe Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp
Gly Pro Val Arg Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295
300Phe Phe Arg Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly
Arg305 310 315 320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly
Ala Leu Val Glu 325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr
Gln Thr Phe Lys Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His
Phe Phe Gly Arg Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn
Met Thr Asp Glu Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His
Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu
Glu Thr Lys Asp Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410
415Gly Tyr Gly Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln
420 425 430Met Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp
Lys Gln 435 440 445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp
Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro
Glu Ile Lys Tyr Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly
Gly Tyr Leu Pro Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln
Val Pro Pro Leu Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser
Gly Lys Gln Gln Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr
Phe Lys Glu Leu Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535
540Pro Ile Ile Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp
Phe545 550 555 560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn
Tyr Val Pro Val 565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu
Ala Pro Glu Gly Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala
Gly Ser Val Ala Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala
Thr His Gly Lys Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser
Met Phe Gly Phe Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala
Ala Ala Asp Gln Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650
655Gly Arg Thr Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His
660 665 670Ser Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr
Asp Pro 675 680 685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg
Gly Ile Asp Arg 690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val
Ile Tyr Tyr Ile Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln
Pro Ala Glu Pro Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys
Gly Ile Tyr Leu Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu
Ala Asn Ile Leu Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu
Lys Ala Ala Ser Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775
780Ile Tyr Ser Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala
Ala785 790 795 800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp
Ala Gly Glu Ala 805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser
Gly Pro Tyr Val Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro
Asn Gln Ile Arg Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu
Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala
Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val
Ala Val Leu Asn Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890
895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser
900 905 910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92025922PRTArtificial SequenceE190V, P199S 25Met Ala Asp Gln Ala
Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile
Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu
Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser
Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg
Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Val Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Ser Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260
265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn Leu Gln Arg
Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile Ile Gln Glu
Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser Val Ile Lys
Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu Leu Glu Lys
Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn Asn Thr Ser
Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp Gly Ala Tyr
Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360 365Ala Lys
Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro 370 375
380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys Arg
Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu Ala
His Thr Ile Lys 405 410 415Gly Tyr Gly Leu Gly His Asn Phe Glu Gly
Arg Asn Ala Thr His Gln 420 425 430Met Lys Lys Leu Thr Leu Asp Asp
Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr Asp
Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr His
Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475 480Glu
Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn 485 490
495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser Val Arg
500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met Ala Thr
Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly Leu Ala
Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg Thr Phe
Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile Tyr Asn
Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp Leu Met
Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu His Glu
Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600 605Ala
Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr 610 615
620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser Ile
Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu Leu
Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly Leu
Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr Asn
Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu Ile
Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly Pro
Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715 720Tyr
Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val 725 730
735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu Gly Thr
740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly Met Gln
Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp Tyr Gly
Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val Asn Leu
Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln Leu Arg
Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr Thr Gln
Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser Asp Phe
Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840 845Gly
Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr 850 855
860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser Ile
Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly Lys
Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys
Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala Pro
Glu Glu 915 92026922PRTArtificial SequenceQ195H, P199S 26Met Ala
Asp Gln Ala Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe
Ala Met Ile Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25
30Pro Glu Glu Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln
35 40 45Glu Ser Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu
Glu 50 55 60Arg Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser
Thr Asp65 70 75 80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu
Phe Pro Gly Asp 85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile
Arg Trp Asn Ala Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro
Gly Ile Gly Val Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala
Ala Pro Leu Tyr Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly
Lys Asp His Pro Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln
Gly His Ala Ser Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170
175Gly Arg Leu Ser Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser
180 185 190Arg Glu His Gly Gly Ile Ser Ser Tyr Pro His Pro His Gly
Met Lys 195 200 205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu
Gly Pro Met Asp 210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr
Leu Glu Asn Arg Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His
Val Trp Ala Phe Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu
Ser Arg Gly Leu Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp
Asn Leu Thr Phe Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp
Gly Pro Val Arg Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295
300Phe Phe Arg Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly
Arg305 310 315 320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly
Ala Leu Val Glu 325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr
Gln Thr Phe Lys Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His
Phe Phe Gly Arg Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn
Met Thr Asp Glu Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His
Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu
Glu Thr Lys Asp Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410
415Gly Tyr Gly Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln
420 425 430Met Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp
Lys Gln 435 440 445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp
Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro
Glu Ile Lys Tyr Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly
Gly Tyr Leu Pro Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln
Val Pro Pro Leu Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser
Gly Lys Gln Gln Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr
Phe Lys Glu Leu Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535
540Pro Ile Ile Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp
Phe545 550 555 560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn
Tyr Val Pro Val 565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu
Ala Pro Glu Gly Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala
Gly Ser Val Ala Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala
Thr His Gly Lys Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser
Met Phe Gly Phe Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala
Ala Ala Asp Gln Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650
655Gly Arg Thr Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His
660 665 670Ser Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr
Asp Pro 675 680 685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg
Gly Ile Asp Arg 690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val
Ile Tyr Tyr Ile Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln
Pro Ala Glu Pro Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys
Gly Ile Tyr Leu Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu
Ala Asn Ile Leu Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu
Lys Ala Ala Ser Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775
780Ile Tyr Ser Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala
Ala785 790 795 800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp
Ala Gly Glu Ala 805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser
Gly Pro Tyr Val Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro
Asn Gln Ile Arg Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu
Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala
Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val
Ala Val Leu Asn Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890
895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser
900 905 910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92027922PRTArtificial SequenceE190V, Y201A 27Met Ala Asp Gln Ala
Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile
Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu
Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser
Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg
Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Val Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Pro Ser Ala Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser
885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro
Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92028922PRTArtificial SequenceQ195H, Y201A 28Met Ala Asp Gln Ala
Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile
Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu
Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser
Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg
Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu
His Gly Gly Ile Pro Ser Ala Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Asn Ala Thr His Gln 420 425 430Met
Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92029922PRTArtificial
SequenceP199S, Y201A 29Met Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro
Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg Asp Gly Val Ala Ser
Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp
Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg
Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val
Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile
Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu
Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala Ala 100 105 110Ile Met
Val His Arg Ala Gln Arg Pro Gly Ile Gly Val Gly Gly His 115 120
125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn
130 135 140His Phe Phe Arg Gly Lys Asp His Pro Gly Gly Gly Asp Gln
Ile Phe145 150 155 160Phe Gln Gly His Ala Ser Pro Gly Met Tyr Ala
Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser Glu Asp Asp Leu Asp
Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu Gln Gly Gly Ile Ser
Ser Ala Pro His Pro His Gly Met Lys 195 200 205Asp Phe Trp Glu Phe
Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp 210 215 220Ala Ile Tyr
Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg Gly Ile225 230 235
240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe Leu Gly Asp Gly Glu
245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala
Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn
Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile
Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser
Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu
Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn
Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp
Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360
365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro
370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys
Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu
Ala His Thr Ile Lys 405 410 415Gly Tyr Gly Leu Gly His Asn Phe Glu
Gly Arg Asn Ala Thr His Gln 420 425 430Met Lys Lys Leu Thr Leu Asp
Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr
Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr
His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475
480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn
485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser
Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met
Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly
Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg
Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile
Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp
Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu
His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600
605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr
610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser
Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu
Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly
Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr
Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu
Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly
Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715
720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val
725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu
Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly
Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp
Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val
Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln
Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr
Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser
Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840
845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr
850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser
Ile Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly
Lys Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe
Lys Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala
Pro Glu Glu 915 92030922PRTArtificial SequenceN428A, Q432E 30Met
Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10
15Phe Ala Met Ile Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp
20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu
Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu
Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr
Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro
Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp
Ile Arg Trp Asn Ala Ala 100 105 110Ile Met Val His Arg Ala Gln Arg
Pro Gly Ile Gly Val Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly
Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg
Gly Lys Asp His Pro Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe
Gln Gly His Ala Ser Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170
175Gly Arg Leu Ser Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser
180 185 190Arg Glu Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly
Met Lys 195 200 205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu
Gly Pro Met Asp 210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr
Leu Glu Asn Arg Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His
Val Trp Ala Phe Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu
Ser Arg Gly Leu Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp
Asn Leu Thr Phe Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp
Gly Pro Val Arg Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295
300Phe Phe Arg Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly
Arg305 310 315 320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly
Ala Leu Val Glu 325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr
Gln Thr Phe Lys Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His
Phe Phe Gly Arg Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn
Met Thr Asp Glu Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His
Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu
Glu Thr Lys Asp Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410
415Gly Tyr Gly Leu Gly His Asn Phe Glu Gly Arg Ala Ala Thr His Glu
420 425 430Met Lys Lys Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp
Lys Gln 435 440 445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp
Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro
Glu Ile Lys Tyr Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly
Gly Tyr Leu Pro Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln
Val Pro Pro Leu Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser
Gly Lys Gln Gln Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr
Phe Lys Glu Leu Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535
540Pro Ile Ile Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp
Phe545 550 555 560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn
Tyr Val Pro Val 565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu
Ala Pro
Glu Gly Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser
Val Ala Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His
Gly Lys Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe
Gly Phe Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala
Asp Gln Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly
Arg Thr Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665
670Ser Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro
675 680 685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile
Asp Arg 690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr
Tyr Ile Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala
Glu Pro Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile
Tyr Leu Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn
Ile Leu Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala
Ala Ser Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile
Tyr Ser Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790
795 800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu
Ala 805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr
Val Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile
Arg Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp
Gly Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe
Phe Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu
Asn Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala
Ala Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905
910Val Ser Val Asp Pro Asn Ala Pro Glu Glu 915
92031922PRTArtificial SequenceN428A, K435A 31Met Ala Asp Gln Ala
Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile
Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu
Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser
Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg
Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75
80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp
85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala
Ala 100 105 110Ile Met Val His Arg Ala Gln Arg Pro Gly Ile Gly Val
Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr
Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg Gly Lys Asp His Pro
Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe Gln Gly His Ala Ser
Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser
Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu
Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly Met Lys 195 200
205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp
210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg
Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe
Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu
Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe
Val Val Asn Cys Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg
Gly Asn Thr Lys Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg
Gly Ala Gly Trp Ser Val Ile Lys Val Val Trp Gly Arg305 310 315
320Glu Trp Asp Glu Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu
325 330 335Ile Met Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys
Ala Asn 340 345 350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg
Asp Pro Arg Thr 355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu
Glu Ile Trp Lys Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys
Val Tyr Ala Ala Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp
Arg Pro Thr Val Ile Leu Ala His Thr Ile Lys 405 410 415Gly Tyr Gly
Leu Gly His Asn Phe Glu Gly Arg Ala Ala Thr His Gln 420 425 430Met
Lys Ala Leu Thr Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440
445Gly Ile Pro Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro
450 455 460Pro Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr
Met Lys465 470 475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro
Glu Arg Arg Glu Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu
Asp Lys Leu Arg Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln
Ile Ala Thr Thr Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu
Met Arg Asp Lys Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile
Pro Asp Glu Ala Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555
560Pro Thr Leu Lys Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val
565 570 575Asp His Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly
Gln Ile 580 585 590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala
Ser Phe Ile Ala 595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys
Ala Met Ile Pro Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe
Gln Arg Thr Gly Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln
Met Ala Arg Gly Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr
Thr Leu Thr Gly Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser
Pro Val Leu Ala Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680
685Ser Phe Ala Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg
690 695 700Met Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile
Thr Ile705 710 715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro
Glu Gly Leu Asp Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu
Tyr Ser Arg Gly Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu
Ala Ser Gly Val Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser
Ile Leu Glu Ala Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser
Ala Thr Ser Trp Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795
800Arg Asn Lys Ala Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala
805 810 815Phe Val Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val
Ala Val 820 825 830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg
Glu Trp Val Pro 835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly
Phe Gly Phe Ser Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe
Asn Ile Asp Ala Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn
Ser Leu Ala Arg Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala
Gln Ala Ala Glu Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val
Ser Val Asp Pro Asn Ala Pro Glu Glu 915 92032922PRTArtificial
SequenceY418H, K435A 32Met Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro
Ser Asp Asp Ser Asn1 5 10 15Phe Ala Met Ile Arg Asp Gly Val Ala Ser
Tyr Leu Asn Asp Ser Asp 20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp
Ser Leu Asp Gly Leu Leu Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg
Tyr Leu Met Leu Arg Leu Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val
Ser Leu Pro Pro Met Thr Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile
Pro Thr Ser Met Glu Pro Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu
Lys Arg Tyr Arg Arg Trp Ile Arg Trp Asn Ala Ala 100 105 110Ile Met
Val His Arg Ala Gln Arg Pro Gly Ile Gly Val Gly Gly His 115 120
125Ile Ser Thr Tyr Ala Gly Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn
130 135 140His Phe Phe Arg Gly Lys Asp His Pro Gly Gly Gly Asp Gln
Ile Phe145 150 155 160Phe Gln Gly His Ala Ser Pro Gly Met Tyr Ala
Arg Ala Phe Met Glu 165 170 175Gly Arg Leu Ser Glu Asp Asp Leu Asp
Gly Phe Arg Gln Glu Val Ser 180 185 190Arg Glu Gln Gly Gly Ile Pro
Ser Tyr Pro His Pro His Gly Met Lys 195 200 205Asp Phe Trp Glu Phe
Pro Thr Val Ser Met Gly Leu Gly Pro Met Asp 210 215 220Ala Ile Tyr
Gln Ala Arg Phe Asn Arg Tyr Leu Glu Asn Arg Gly Ile225 230 235
240Lys Asp Thr Ser Asp Gln His Val Trp Ala Phe Leu Gly Asp Gly Glu
245 250 255Met Asp Glu Pro Glu Ser Arg Gly Leu Ile Gln Gln Ala Ala
Leu Asn 260 265 270Asn Leu Asp Asn Leu Thr Phe Val Val Asn Cys Asn
Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys Ile
Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp Ser
Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu Leu
Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met Asn
Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345 350Asp
Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr 355 360
365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys Leu Pro
370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala Tyr Lys
Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val Ile Leu
Ala His Thr Ile Lys 405 410 415Gly His Gly Leu Gly His Asn Phe Glu
Gly Arg Asn Ala Thr His Gln 420 425 430Met Lys Ala Leu Thr Leu Asp
Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro Ile Thr
Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro Tyr Tyr
His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470 475
480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu Asn
485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg Ser
Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr Met
Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys Gly
Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala Arg
Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys Ile
Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His Asp
Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585 590Leu
His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala 595 600
605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro Leu Tyr
610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly Asp Ser
Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly Phe Leu
Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly Glu Gly
Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala Ser Thr
Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala Tyr Glu
Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met Tyr Gly
Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710 715
720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp Val
725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly Glu
Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val Gly
Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala Asp
Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp Val
Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala Gln
Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val Thr
Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825 830Ser
Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro 835 840
845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser Asp Thr
850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala Glu Ser
Ile Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg Glu Gly
Lys Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu Lys Phe
Lys Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro Asn Ala
Pro Glu Glu 915 92033922PRTArtificial SequenceY418H, Q432A 33Met
Ala Asp Gln Ala Lys Leu Gly Gly Lys Pro Ser Asp Asp Ser Asn1 5 10
15Phe Ala Met Ile Arg Asp Gly Val Ala Ser Tyr Leu Asn Asp Ser Asp
20 25 30Pro Glu Glu Thr Asn Glu Trp Met Asp Ser Leu Asp Gly Leu Leu
Gln 35 40 45Glu Ser Ser Pro Glu Arg Ala Arg Tyr Leu Met Leu Arg Leu
Leu Glu 50 55 60Arg Ala Ser Ala Lys Arg Val Ser Leu Pro Pro Met Thr
Ser Thr Asp65 70 75 80Tyr Val Asn Thr Ile Pro Thr Ser Met Glu Pro
Glu Phe Pro Gly Asp 85 90 95Glu Glu Met Glu Lys Arg Tyr Arg Arg Trp
Ile Arg Trp Asn Ala Ala 100 105 110Ile Met Val His Arg Ala Gln Arg
Pro Gly Ile Gly Val Gly Gly His 115 120 125Ile Ser Thr Tyr Ala Gly
Ala Ala Pro Leu Tyr Glu Val Gly Phe Asn 130 135 140His Phe Phe Arg
Gly Lys Asp His Pro Gly Gly Gly Asp Gln Ile Phe145 150 155 160Phe
Gln Gly His Ala Ser Pro Gly Met Tyr Ala Arg Ala Phe Met Glu 165 170
175Gly Arg Leu Ser Glu Asp Asp Leu Asp Gly Phe Arg Gln Glu Val Ser
180 185 190Arg Glu Gln Gly Gly Ile Pro Ser Tyr Pro His Pro His Gly
Met Lys 195 200 205Asp Phe Trp Glu Phe Pro Thr Val Ser Met Gly Leu
Gly Pro Met Asp 210 215 220Ala Ile Tyr Gln Ala Arg Phe Asn Arg Tyr
Leu Glu Asn Arg Gly Ile225 230 235 240Lys Asp Thr Ser Asp Gln His
Val Trp Ala Phe Leu Gly Asp Gly Glu 245 250 255Met Asp Glu Pro Glu
Ser Arg Gly Leu Ile Gln Gln Ala Ala Leu Asn 260 265 270Asn Leu Asp
Asn Leu Thr Phe Val Val Asn Cys
Asn Leu Gln Arg Leu 275 280 285Asp Gly Pro Val Arg Gly Asn Thr Lys
Ile Ile Gln Glu Leu Glu Ser 290 295 300Phe Phe Arg Gly Ala Gly Trp
Ser Val Ile Lys Val Val Trp Gly Arg305 310 315 320Glu Trp Asp Glu
Leu Leu Glu Lys Asp Gln Asp Gly Ala Leu Val Glu 325 330 335Ile Met
Asn Asn Thr Ser Asp Gly Asp Tyr Gln Thr Phe Lys Ala Asn 340 345
350Asp Gly Ala Tyr Val Arg Glu His Phe Phe Gly Arg Asp Pro Arg Thr
355 360 365Ala Lys Leu Val Glu Asn Met Thr Asp Glu Glu Ile Trp Lys
Leu Pro 370 375 380Arg Gly Gly His Asp Tyr Arg Lys Val Tyr Ala Ala
Tyr Lys Arg Ala385 390 395 400Leu Glu Thr Lys Asp Arg Pro Thr Val
Ile Leu Ala His Thr Ile Lys 405 410 415Gly His Gly Leu Gly His Asn
Phe Glu Gly Arg Asn Ala Thr His Ala 420 425 430Met Lys Lys Leu Thr
Leu Asp Asp Leu Lys Leu Phe Arg Asp Lys Gln 435 440 445Gly Ile Pro
Ile Thr Asp Glu Gln Leu Glu Lys Asp Pro Tyr Leu Pro 450 455 460Pro
Tyr Tyr His Pro Gly Glu Asp Ala Pro Glu Ile Lys Tyr Met Lys465 470
475 480Glu Arg Arg Ala Ala Leu Gly Gly Tyr Leu Pro Glu Arg Arg Glu
Asn 485 490 495Tyr Asp Pro Ile Gln Val Pro Pro Leu Asp Lys Leu Arg
Ser Val Arg 500 505 510Lys Gly Ser Gly Lys Gln Gln Ile Ala Thr Thr
Met Ala Thr Val Arg 515 520 525Thr Phe Lys Glu Leu Met Arg Asp Lys
Gly Leu Ala Asp Arg Leu Val 530 535 540Pro Ile Ile Pro Asp Glu Ala
Arg Thr Phe Gly Leu Asp Ser Trp Phe545 550 555 560Pro Thr Leu Lys
Ile Tyr Asn Pro His Gly Gln Asn Tyr Val Pro Val 565 570 575Asp His
Asp Leu Met Leu Ser Tyr Arg Glu Ala Pro Glu Gly Gln Ile 580 585
590Leu His Glu Gly Ile Asn Glu Ala Gly Ser Val Ala Ser Phe Ile Ala
595 600 605Ala Gly Thr Ser Tyr Ala Thr His Gly Lys Ala Met Ile Pro
Leu Tyr 610 615 620Ile Phe Tyr Ser Met Phe Gly Phe Gln Arg Thr Gly
Asp Ser Ile Trp625 630 635 640Ala Ala Ala Asp Gln Met Ala Arg Gly
Phe Leu Leu Gly Ala Thr Ala 645 650 655Gly Arg Thr Thr Leu Thr Gly
Glu Gly Leu Gln His Met Asp Gly His 660 665 670Ser Pro Val Leu Ala
Ser Thr Asn Glu Gly Val Glu Thr Tyr Asp Pro 675 680 685Ser Phe Ala
Tyr Glu Ile Ala His Leu Val His Arg Gly Ile Asp Arg 690 695 700Met
Tyr Gly Pro Gly Lys Gly Glu Asp Val Ile Tyr Tyr Ile Thr Ile705 710
715 720Tyr Asn Glu Pro Thr Pro Gln Pro Ala Glu Pro Glu Gly Leu Asp
Val 725 730 735Glu Gly Leu His Lys Gly Ile Tyr Leu Tyr Ser Arg Gly
Glu Gly Thr 740 745 750Gly His Glu Ala Asn Ile Leu Ala Ser Gly Val
Gly Met Gln Trp Ala 755 760 765Leu Lys Ala Ala Ser Ile Leu Glu Ala
Asp Tyr Gly Val Arg Ala Asn 770 775 780Ile Tyr Ser Ala Thr Ser Trp
Val Asn Leu Ala Arg Asp Gly Ala Ala785 790 795 800Arg Asn Lys Ala
Gln Leu Arg Asn Pro Gly Ala Asp Ala Gly Glu Ala 805 810 815Phe Val
Thr Thr Gln Leu Lys Gln Thr Ser Gly Pro Tyr Val Ala Val 820 825
830Ser Asp Phe Ser Thr Asp Leu Pro Asn Gln Ile Arg Glu Trp Val Pro
835 840 845Gly Asp Tyr Thr Val Leu Gly Ala Asp Gly Phe Gly Phe Ser
Asp Thr 850 855 860Arg Pro Ala Ala Arg Arg Phe Phe Asn Ile Asp Ala
Glu Ser Ile Val865 870 875 880Val Ala Val Leu Asn Ser Leu Ala Arg
Glu Gly Lys Ile Asp Val Ser 885 890 895Val Ala Ala Gln Ala Ala Glu
Lys Phe Lys Leu Asp Asp Pro Thr Ser 900 905 910Val Ser Val Asp Pro
Asn Ala Pro Glu Glu 915 920
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